IPA Kelas 10 - Besaran, Satuan, dan Dimensi | GIA Academy

GIA Academy
8 Jul 202323:02

Summary

TLDRThis educational video from Gia Academy YouTube channel explores the concept of physical quantities, units, and dimensions. It explains the difference between base and derived quantities, introduces the seven base quantities with their units, and discusses the International System of Units (SI). The video also covers the conversion between different unit systems, the importance of dimensions in scientific equations, and provides examples of how to analyze and apply these concepts. It concludes with practice problems to reinforce the learning.

Takeaways

  • 🍎 The video discusses the concept of measuring physical quantities and their units, starting with the example of weighing fruits in a supermarket.
  • πŸ“ It explains that physical quantities can be measured with values and units, and are categorized into base and derived quantities.
  • πŸ”‘ Base quantities have predefined units, such as length (meter), mass (kilogram), time (second), etc., while derived quantities are those whose units are derived from base units.
  • πŸ“š The video introduces the International System of Units (SI), which is a globally agreed system of measurement units used in science.
  • ⏱️ It highlights the seven base quantities in the SI system: length, mass, time, thermodynamic temperature, amount of substance, luminous intensity, and electric current.
  • πŸ” Derived quantities, such as area and volume, are explained as those derived from base quantities, and examples like speed, acceleration, force, and energy are given.
  • πŸ“Š The video distinguishes between scalar and vector quantities, with the former having magnitude only and the latter having both magnitude and direction.
  • 🌐 It mentions the historical development of the SI system, which was agreed upon at an international conference in Paris in 1960, building upon the MKS system.
  • πŸ”’ The script provides examples of unit prefixes in the SI system, which are used to denote multiples of ten, facilitating easy conversion between units.
  • πŸ”„ The video also touches on the conversion of units between different systems, emphasizing the use of conversion factors to change from one system to another.
  • πŸ“˜ Lastly, it discusses dimensions, which are the expressions of physical quantities using symbols, and how they help in analyzing the equivalence of different physical quantities and the validity of equations.

Q & A

  • What is the primary focus of the video script?

    -The primary focus of the video script is to educate about the concepts of physical quantities, their units, and dimensions, as well as the International System of Units (SI).

  • What is the difference between base quantities and derived quantities?

    -Base quantities are those with units that are already established, such as length, mass, and time. Derived quantities, on the other hand, have units derived from the base quantities, such as area, volume, velocity, and force.

  • How many base quantities are there in the International System of Units (SI)?

    -There are seven base quantities in the International System of Units (SI).

  • What are the seven base quantities in the SI system?

    -The seven base quantities in the SI system are length, mass, time, thermodynamic temperature, electric current, luminous intensity, and amount of substance.

  • What are scalar and vector quantities?

    -Scalar quantities have only magnitude without direction, such as mass, volume, and energy. Vector quantities have both magnitude and direction, such as velocity, acceleration, and force.

  • What is the significance of the International System of Units (SI)?

    -The SI system is significant because it provides a globally recognized standard for scientific measurements, ensuring consistency and ease of conversion between different units.

  • How is the meter defined in the SI system?

    -The meter in the SI system is defined as the distance light travels in a vacuum in 1/299,792,458 of a second.

  • What is the difference between the MKS and CGS systems of units?

    -The MKS system uses meters, kilograms, and seconds as base units, while the CGS system uses centimeters, grams, and seconds. The SI system is based on the MKS system.

  • What are the advantages of using the SI system over other unit systems?

    -The advantages of using the SI system include its ease of conversion to other similar unit systems due to the use of prefixes that denote multiples of ten, and its wide acceptance and use in scientific communities worldwide.

  • How can dimensions be used to analyze the validity of a physical equation?

    -Dimensions can be used to analyze the validity of a physical equation by ensuring that the dimensions on both sides of the equation are the same, which helps to confirm the correctness of the relationship between the physical quantities.

  • What is the purpose of conversion factors in the context of different unit systems?

    -Conversion factors are used to change values from one unit system to another, allowing for comparisons and calculations across different systems of measurement.

Outlines

00:00

🍎 Introduction to Units and Dimensions

This paragraph introduces the concept of units and dimensions in the context of measuring physical quantities. It begins with a discussion on the mass of fruits measured at a supermarket, which leads to the explanation of the difference between base and derived quantities. Base quantities have predefined units, while derived quantities derive their units from base quantities. The paragraph lists the seven base quantities recognized by the International System of Units (SI), including length, mass, time, thermodynamic temperature, luminous intensity, amount of substance, and electric current. It also touches on the distinction between scalar and vector quantities, with the latter having both magnitude and direction.

05:01

🌐 International System of Units (SI)

This section delves into the need for a universally accepted system of units for scientific purposes, leading to the development of the International System of Units (SI). It highlights the SI's advantages, such as its fixed and unchanging nature, ease of reproduction, and convertibility with other units. The paragraph outlines the definitions of the SI base units for length (meter), mass (kilogram), and time (second), and mentions other units like Kelvin for temperature and candela for luminous intensity. It also introduces prefixes used in the SI system to denote decimal multiples and submultiples of units.

10:03

πŸ” Conversion of Units and Dimensions

The paragraph discusses the conversion of units between different systems, emphasizing the use of conversion factors. It provides examples of conversion factors for length, mass, time, area, and volume. The concept of dimensions is introduced, explaining how physical quantities can be expressed using symbols and how dimensions are written in terms of base quantity symbols enclosed in square brackets. The paragraph also explains how to determine the dimensions of derived quantities using formulas and their units, and how dimensions can be used to analyze the equivalence of two quantities or the validity of a physical relationship.

15:10

πŸ“š Analysis of Dimensional Equations

This section focuses on the practical application of dimensions in analyzing the correctness of physical equations. It uses examples to demonstrate how dimensions can verify the equivalence of different physical quantities and the validity of formulas. The paragraph shows how the dimensions of force and kinetic energy are the same, indicating their equivalence, and how the dimensions of various physical quantities like velocity, acceleration, and pressure can be derived from their formulas. It also discusses the use of dimensions to analyze the dimensions of constants in physical equations, such as the gravitational constant in Newton's law of universal gravitation.

20:11

πŸ“ Problem Solving with Units and Dimensions

The final paragraph presents a series of problems that apply the concepts of units and dimensions discussed earlier. It includes identifying base quantities, determining the type of physical quantities (scalar or vector), converting units, and analyzing the correctness of physical equations based on their dimensions. The problems cover a range of topics, from electrical current and luminous intensity to the conversion of speed units and the analysis of the dimensions of various physical quantities. The paragraph concludes with a summary of the key points and encourages viewers to continue learning about units and dimensions.

Mindmap

Keywords

πŸ’‘Mass

Mass is a measure of the amount of matter in an object and is one of the fundamental properties of matter. In the video, mass is introduced as a primary physical quantity with the unit of kilograms (kg). It is used to describe the amount of matter in the fruits that one buys at a supermarket, as indicated by the scale. The script mentions that mass is a base quantity from which derived quantities like weight can be calculated.

πŸ’‘Measurement

Measurement is the process of determining the value of a quantity, such as length, time, or mass, by comparing it with a standard unit. The video script discusses measurement in the context of weighing fruits at a supermarket, emphasizing that the value shown by the scale represents the mass of the fruits, which is a measurable quantity.

πŸ’‘Base Quantity

A base quantity is a fundamental physical property that is defined by a standard unit. The video explains that there are seven base quantities, including length, mass, time, thermodynamic temperature, electric current, luminous intensity, and amount of substance. These are essential for scientific measurements and are used to define other derived quantities.

πŸ’‘Derived Quantity

Derived quantities are physical quantities that are defined in terms of base quantities. The script provides examples such as area and volume, which are derived from length, and acceleration, which is derived from length and time. Derived quantities help in understanding more complex physical phenomena based on fundamental properties.

πŸ’‘Scalar and Vector

Scalars are physical quantities that have only magnitude, while vectors have both magnitude and direction. The video script distinguishes between these two by giving examples like mass (a scalar) and velocity (a vector). Understanding the difference is crucial for accurate physical calculations and interpretations.

πŸ’‘International System of Units (SI)

The International System of Units, or SI, is the modern form of the metric system and is the most widely used system of measurement around the world. The video script explains that SI units are defined by international agreement and are used to standardize measurements globally. It mentions the SI units for the seven base quantities.

πŸ’‘Unit Conversion

Unit conversion is the process of changing a value from one unit to another. The script discusses how SI units can be converted into other units using conversion factors. This is important for consistency and comparability of measurements across different systems.

πŸ’‘Dimensional Analysis

Dimensional analysis is a method of checking equations and solving problems by examining the units involved in the calculations. The video script uses dimensional analysis to verify the correctness of physical equations, such as the equation for kinetic energy, by ensuring that the units on both sides of the equation are consistent.

πŸ’‘Physical Constants

Physical constants are quantities that do not change and are essential for formulating scientific laws. The video script refers to physical constants like the gravitational constant (G) in Newton's law of universal gravitation. Understanding the dimensions of these constants is crucial for the correct application of physical laws.

πŸ’‘Coefficients and Prefixes

In the SI system, coefficients and prefixes are used to create multiples and submultiples of units. The script mentions prefixes like 'kilo-', 'centi-', and 'milli-', which are attached to base units to represent larger or smaller quantities. This system allows for a flexible and standardized way to express a wide range of measurements.

πŸ’‘Standard Units

Standard units are the agreed-upon units used for measurement in science and commerce. The video script discusses standard units for length, mass, and time in the SI system, such as meters, kilograms, and seconds. These units provide a common language for scientific communication and commerce.

Highlights

Introduction to the concept of measuring the mass of fruits at a supermarket using a scale.

Explanation of the difference between base and derived quantities in physics.

Listing of the seven base quantities in the International System of Units (SI).

Description of how derived quantities are derived from base quantities.

Introduction to the concept of scalar and vector quantities.

Explanation of the International System of Units (SI) and its development from the MKS system.

Definition of the meter, kilogram, second, Kelvin, candela, mole, and ampere in the SI system.

Discussion on the advantages of the SI system over other unit systems.

Introduction to the prefixes used in the SI system for expressing multiples of ten.

Differentiation between base units and non-base units in the International System of Units (SI).

Examples of non-base units such as centimeters, grams, and degrees Celsius.

Explanation of how to convert units from one system to another using conversion factors.

Introduction to the concept of dimensions in physics and their representation.

How to determine the dimensions of derived quantities using formulas and their units.

Use of dimensions to analyze the equivalence of two quantities or the validity of a physical equation.

Example problems demonstrating the application of unit conversion and dimensional analysis.

Conclusion and encouragement for viewers to continue learning with Gia Academy.

Transcripts

play00:02

[Musik]

play00:18

Halo teman-teman selamat datang kembali

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di channel YouTube Gia Academy Semoga

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teman-teman selalu sehat dan terus

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semangat

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Pernahkah teman-teman membeli buah di

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supermarket sebelum membayar buah

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tersebut di kasir biasanya buah yang

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teman-teman beli akan ditimbang terlebih

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dahulu nilai apa yang ditunjukkan oleh

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timbangan tersebut apakah memiliki

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satuan Nah agar pertanyaan tadi terjawab

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kita akan membahas materi ini secara

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lengkap di video kali ini

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jadi di video ini kita akan belajar

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tentang besaran satuan dan dimensi simak

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terus videonya ya

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nah teman-teman nilai yang ditunjukkan

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oleh timbangan tadi adalah massa buah

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yang teman-teman beli masa dapat diukur

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dengan menggunakan timbangan dan

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memiliki satuan massa merupakan salah

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satu contoh besaran jadi besaran adalah

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sesuatu yang dapat diukur dinyatakan

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dengan nilai atau angka dan memiliki

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satuan

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berdasarkan satuannya besaran dapat

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dibedakan menjadi dua macam yaitu

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besaran pokok dan besaran turunan

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besaran pokok merupakan besaran yang

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satuannya sudah ditetapkan sedangkan

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besaran turunan adalah besaran yang

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satuannya diturunkan dari besaran pokok

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nah teman-teman besaran pokok ada 7

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macam yaitu panjang satuannya meter alat

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ukurnya mistar dan jangka sorong massa

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satuannya kg alat ukurnya timbangan atau

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neraca waktu satuannya second alat

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ukurnya stopwatch suhu satuannya Kelvin

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alat ukurnya termometer

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intensitas cahaya satuannya candela alat

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ukurnya lux meter jumlah zat satuannya

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mol tidak ada alat ukurnya dan kuat arus

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listrik satuannya ampere alat ukurnya

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amperemeter agar teman-teman mudah untuk

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mengingat ke-7 besaran pokok ini kita

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bisa menggunakan jembatan keledai Papa

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Mama waktu subuh ingin jualan kue

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selanjutnya besaran turunan jumlahnya

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sangat banyak selain dari 7 macam

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besaran pokok contoh luas dan volume

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diturunkan dari besaran pokok panjang

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kecepatan dan percepatan diturunkan dari

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besaran pokok panjang dan waktu massa

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jenis diturunkan dari besaran pokok

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panjang dan massa gaya usaha dan energi

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daya momentum dan impuls semuanya

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diturunkan dari besaran pokok panjang

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massa dan waktu

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berikutnya tekanan diturunkan dari

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besaran pokok panjang massa dan waktu

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frekuensi diturunkan dari besaran pokok

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waktu muatan listrik diturunkan dari

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besaran pokok waktu dan kuat arus

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listrik potensial listrik hambatan

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listrik keduanya diturunkan dari besaran

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pokok panjang massa waktu dan kuat arus

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listrik teman-teman selain yang sudah

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disebutkan ini masih banyak contoh

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besaran turunan lainnya ya

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berdasarkan nilai dan arah besaran juga

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dibedakan menjadi dua macam yaitu

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besaran skalar dan besaran vektor

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besaran skalar hanya memiliki nilai

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tidak memiliki arah contohnya semua

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besaran pokok luas volume massa jenis

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usaha daya dan jarak sedangkan besaran

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vektor memiliki nilai dan juga arah

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contohnya perpindahan kecepatan

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percepatan gaya momen gaya momentum dan

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impuls

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selanjutnya kita akan membahas mengenai

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satuan satuan merupakan pembanding dalam

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pengukuran sistem satuan dibedakan

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menjadi 3 yaitu sistem MKS meter

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kilogram sekon sistem CGS cm gram sekon

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sistem FPS Fit atau kaki Phone atau

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phone second

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karena adanya beberapa sistem satuan

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maka untuk keperluan ilmiah diperlukan

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satu sistem satuan yang dapat digunakan

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secara luas di berbagai belahan dunia

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para ilmuwan kemudian menyepakati sebuah

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sistem satuan yang berlaku secara

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internasional sistem satuan ini dikenal

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dengan sistem satuan internasional atau

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SI sistem ini disepakati pada konferensi

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umum ke-11 tentang berat dan ukuran yang

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diadakan di Paris Prancis pada tahun

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1960 nah teman-teman pada dasarnya

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sistem si dikembangkan dari sistem

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satuan MKS ya

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satuan internasional atau SI yang sudah

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ditetapkan oleh para ilmuwan memiliki

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ketentuan diantaranya mempunyai nilai

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yang tetap tidak berubah karena apapun

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bersifat umum mudah ditiru dan

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diperbanyak mudah diubah dan dikonversi

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ke satuan lain

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berikutnya kita bahas satuan-satuan

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internasional dan juga definisinya ya

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pertama panjang satuannya meter meter

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didefinisikan sebagai jarak yang

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ditempuh oleh cahaya dalam ruang hampa

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selama selang waktu

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1/299 juta

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792.458 sekon kedua massa satuannya kg

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merupakan masa silinder campuran logam

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platina iridium yang disimpan di lembaga

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internasional berat dan ukuran di

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sefresh Prancis Dan inilah definisi dari

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second yang merupakan satuan waktu

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Kelvin satuan suhu

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candela

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Mall

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dan ampere

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Nah teman-teman jadi inilah satuan

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internasional dari tujuh besaran pokok

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teman-teman sistem si mempunyai beberapa

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kelebihan dibandingkan dengan sistem

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satuan lainnya salah satunya adalah

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mudah dikonversi ke dalam sistem satuan

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lain yang sejenis karena menggunakan

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awalan yang menyatakan bilangan

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kelipatan 10 nah tabel berikut adalah

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awalan Awalan dalam satuan SI

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[Musik]

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selain dibedakan menjadi beberapa sistem

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satuan dalam IPA juga dikelompokkan

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menjadi dua yaitu satuan baku dan satuan

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tidak baku satuan baku adalah satuan

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yang telah ditetapkan atau disepakati

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sebagai satuan dalam pengukuran suatu

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besaran dan nilainya terdefinisi secara

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pasti sedangkan satuan tidak baku adalah

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satuan yang bersifat lokal tidak diakui

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secara internasional dan pemakaiannya

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hanya pada wilayah tertentu

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Berikut ini adalah contoh-contoh satuan

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baku selain satuan internasional atau SI

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satuan panjang diantaranya cm KM kaki

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milky satuan massa seperti gram ton

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kuintal Pon dan ons satuan waktu yaitu

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menit jam hari Minggu bulan tahun Windu

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dasawarsa dan abad satuan suhu berupa

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derajat Celcius derajat Reamur dan

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derajat Fahrenheit lalu satuan kuat arus

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terdiri dari mikro ampere

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dan kilo ampere serta satuan energi

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antara lain elektron volk

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kalori dan kilowatt atau KWH

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untuk satuan tidak baku contohnya adalah

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jengkol depa hasta lengan dan langkah

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yang merupakan satuan panjang tumpak

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satuan luas serta Gantang gelas dan

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gayung yang merupakan satuan volume

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nah teman-teman satuan yang telah kita

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bahas sebelumnya dapat kita konversikan

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atau kita ubah dari satu sistem satuan

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ke sistem satuan lain dengan menggunakan

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faktor konversi yaitu bilangan pengali

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yang mengubah suatu satuan ke dalam

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satuan-satuan lain yang setara Berikut

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ini adalah contoh faktor konversi

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beberapa besaran faktor konversi satuan

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panjang sebagai berikut

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faktor konversi satuan massa

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faktor konversi satuan waktu

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[Musik]

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terakhir faktor konversi satuan luas

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dan satuan volume

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berikutnya kita membahas mengenai

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dimensi dimensi adalah cara penulisan

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suatu besaran dengan menggunakan lambang

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besaran pokok dimensi ditulis dengan

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huruf kapital yang diberi kurung siku

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dimensi besaran pokok diantaranya adalah

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panjang dimensinya l massa m waktu T

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suhu theta intensitas cahaya J jumlah

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zat N dan kuat arus listrik dimensinya i

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selanjutnya kita bahas dimensi beberapa

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besaran turunan yang dapat ditentukan

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berdasarkan rumus dan satuannya pertama

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massa jenis rumusnya ro =

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m/v satuannya kilogram meter pangkat

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negatif 3 maka dimensinya adalah m l

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pangkat negatif 3 kedua kecepatan

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rumusnya V =

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s/t satuannya meter sekon pangkat

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negatif 1 maka dimensinya adalah l t

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pangkat negatif 1 dengan cara yang sama

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diperoleh dimensi untuk percepatan l t

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pangkat negatif 2 gaya

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ML t pangkat negatif 2 tekanan m l

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pangkat negatif 1 t pangkat negatif 2

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usaha

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ml^2

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t^-2 daya m l^2

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t^-3 momentum dan impuls masing-masing M

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L T pangkat negatif 1 terakhir momentum

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sudut dimensinya m l pangkat 2 t pangkat

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negatif 1

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dengan menggunakan dimensi kita dapat

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menganalisis kesetaraan atau kesamaan

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dua besaran menganalisis kebenaran suatu

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persamaan yang menyatakan hubungan antar

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besar dan menganalisis dimensi suatu

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konstanta besaran ketiganya akan kita

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bahas satu persatu

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fungsi dimensi yang pertama untuk

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menganalisis kesetaraan atau kesamaan

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dua besaran contoh buktikan bahwa

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besaran usaha memiliki kesetaraan dengan

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energi kinetik sebelumnya kita sudah

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mengetahui bahwa dimensi usaha adalah m

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l^2

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t^-2 selanjutnya persamaan energi

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kinetik ek = setengah MV kuadrat angka

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setengah merupakan bilangan tak

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berdimensi sehingga Eka = MV kuadrat =

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massa * kecepatan kuadrat satuannya kg

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meter sekon pangkat negatif 1

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dipangkatkan 2 sama juga dengan kg meter

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pangkat 2 sekon pangkat negatif 2 maka

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dimensi energi kinetik adalah

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ML pangkat 2 t pangkat negatif 2 jadi

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dapat kita lihat bahwa dimensi usaha

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sama dengan energi kinetik hal ini

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menunjukkan bahwa kedua besaran tersebut

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setara

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fungsi kedua untuk menganalisis

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kebenaran suatu persamaan yang

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menyatakan hubungan antar besaran contoh

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Buktikanlah bahwa persamaan S =

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v0t + setengah atΒ² adalah benar jawab S

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= jarak satuannya m dimensinya l fenol

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sama dengan kecepatan awal satuannya

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meter sekon pangkat negatif 1 dimensinya

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l t pangkat negatif 1 t = waktu

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satuannya S dimensinya t a = percepatan

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satuannya meter sekon pangkat negatif 2

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dimensinya l t pangkat negatif 2 dimensi

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untuk persamaan s = v0t + 1/2 atΒ² adalah

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l = l t pangkat negatif 1 dikali t + l t

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pangkat negatif 2 dikali t pangkat 2

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semua t nya dapat kita coret sehingga l

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= l + l karena dimensi pada ruas kiri

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sama dengan dimensi pada ruas kanan maka

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persamaan S = v0t + setengah atΒ² benar

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fungsi dimensi yang terakhir adalah

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untuk menganalisis dimensi suatu

play15:37

konstanta besaran contoh Jika G

play15:41

merupakan konstanta dari persamaan gaya

play15:43

tarik menarik antara dua benda bermassa

play15:47

m1 dan m2 yang terpisah sejauh r pada

play15:51

persamaan F =

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gm1 M2 per r kuadrat tentukan dimensi G

play15:59

kita jawab F =

play16:02

gm1 M2 per r kuadrat maka G =

play16:08

frΒ² per m1 m2 G = gaya dikali jarak

play16:15

kuadrat per massa dikali massa sama

play16:20

dengan M L T pangkat negatif 2 dikali l

play16:25

kuadrat per m dikali m = l ^ 3

play16:32

pangkat negatif 2 per m = m pangkat

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negatif 1 l ^ 3 t pangkat negatif 2 jadi

play16:42

dimensi G adalah m pangkat negatif 1 l ^

play16:48

3 t pangkat negatif 2

play16:52

agar teman-teman semakin paham Mari kita

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selesaikan contoh soal berikut

play16:59

pada soal pertama kita diminta

play17:02

menentukan kelompok besaran pokok

play17:04

diantara 4 besaran yang diketahui kita

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ingat kembali 7 macam besaran pokok pada

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soal ini besaran pokok yang disebutkan

play17:14

adalah kuat arus listrik dan intensitas

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cahaya massa jenis dan tegangan listrik

play17:20

adalah besaran turunan jadi kelompok

play17:23

besaran pokok ditunjukkan oleh nomor 2

play17:26

dan 4 Jawabannya d

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soal kedua kita diminta untuk menentukan

play17:34

kelompok besaran vektor ingat kembali ya

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besaran vektor memiliki nilai dan arah

play17:41

contohnya kecepatan percepatan gaya

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impuls perpindahan berat momentum dan

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momen gaya jadi yang hanya terdiri dari

play17:53

besaran vektor adalah C

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soal selanjutnya kita diminta

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mengonversi nilai 8000 amstrom ke dalam

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cm ingat kembali bahwa satu angstrong =

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10 pangkat negatif 10 meter sama dengan

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10 pangkat negatif 8 cm sehingga

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8000 amstrom =

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8000 dikali 10 pangkat negatif 8 cm sama

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juga dengan 8 dikali 10 pangkat negatif

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5 cm jawabannya C

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soal berikutnya kita diminta untuk

play18:38

mengonversi satuan kecepatan dalam

play18:41

km/jam menjadi sistem satuan

play18:43

internasional atau SI kita tahu satuan

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internasional dari jarak adalah meter

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dan waktu adalah sekon 1 km/jam = 1

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dikali 1000 meter per 3600 sekon maka 90

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km/jam = 90 dikali 1000 meter per 3600

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sekon sama dengan 25 m/s Jawabannya d

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pada soal kelima kita diminta menentukan

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besaran yang memiliki satuan dan dimensi

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yang benar pada tabel kita cek satu

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persatu pertama momentum satuannya

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kilogram meter sekon pangkat negatif 1

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dan dimensinya M L T pangkat negatif 1

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benar kedua gaya satuannya kilogram

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meter sekon pangkat negatif 2 dan

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dimensinya M L T pangkat negatif 2 benar

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ketiga daya satuannya kg meter pangkat 2

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sekon pangkat negatif 3 dan dimensinya m

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l^2

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t^-3 benar keempat energi satuannya

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kilogram meter pangkat 2 sekon pangkat

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negatif 2 dan dimensinya n l pangkat 2 t

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pangkat negatif 2 salah jadi jawaban

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yang benar adalah 1 2 dan 3A

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soal selanjutnya kita diminta menentukan

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pasangan besaran yang memiliki dimensi

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berbeda a berat dan gaya satuannya

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sama-sama Newton sehingga dimensinya

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sama B energi dan usaha satuannya

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sama-sama Joule sehingga dimensinya sama

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c jarak dan perpindahan satuannya

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sama-sama meter sehingga dimensinya sama

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D momentum dan impuls satuannya

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sama-sama kilogram meter sekon pangkat

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negatif 1 sehingga dimensinya sama

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sedangkan pilihan E berat jenis

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satuannya neutron meter pangkat negatif

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3 sedangkan massa jenis satuannya

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kilogram meter pangkat negatif 3 karena

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satuannya berbeda maka dimensinya juga

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berbeda jadi jawaban yang benar adalah e

play21:23

soal terakhir kita diminta menentukan

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dimensi dari konstanta k pada persamaan

play21:30

gaya coulomb F =

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kq1 Q2

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/ rΒ² terlebih dahulu kita tentukan

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dimensi muatan berdasarkan satuannya

play21:42

Kulon = ampere second = it selanjutnya

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kita tentukan dimensi konstanta k = gaya

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dikali jarak kuadrat

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permuatan dikali muatan = M L T pangkat

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negatif 2 dikali l pangkat 2 per it * it

play22:10

= M l^3

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t^-2/i ^ 2 T ^ 2 = M

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l^3

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t^-4 i ^ -2 jadi dimensi K adalah m l^3

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t^-4

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i^-2 Jawabannya d

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Oke teman-teman demikianlah pembahasan

play22:42

kita tentang besaran satuan dan dimensi

play22:46

jangan lupa tonton terus video-video

play22:48

terbaru di channel kita ya sampai jumpa

play22:51

di video berikutnya

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