Physics Chapter 1 Quiz

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Questions and Answers

What is the standard of length based on?

The circumference of the Earth

The height of Mount Everest

The speed of light in vacuum (correct)

The distance traveled by a car in an hour

In mechanics, which three basic quantities can any physics quantity be expressed in terms of?

Distance, time, and energy

Volume, pressure, and temperature

Length, mass, and time (correct)

Force, mass, and velocity

Which of the following represents the unit of mass in mechanics?

M (correct)

What is the total mark value of the final exam in the evaluation criteria?

50 Marks Signup and view all the answers

How long is the mid-term exam scheduled for in terms of weeks?

1 Week Signup and view all the answers

Which textbook is listed as the primary material for the course?

Physics for Scientists and Engineers Signup and view all the answers

How many weeks are dedicated to the topic of Statics and Torque?

4 Weeks Signup and view all the answers

What is the mark value assigned to quizzes and assignments in the overall evaluation?

10 Marks Signup and view all the answers

What is the dimension of the proportionality constant G in Newton's Law of universal gravitation?

m³/(kg·s²) Signup and view all the answers

If a = kr^n*v^m, what is the value of n?

-1 Signup and view all the answers

In the equation F = G(Mm/r²), what does r represent?

Distance between the objects Signup and view all the answers

Which of the following equations is dimensionally correct?

vf = vi + ax Signup and view all the answers

What is the derived SI unit for gravitational force F in the equation F = G(Mm/r²)?

kg·m/s² Signup and view all the answers

In the expression a  r^n v^m, the total dimensional equation simplifies to which of the following forms?

L^n T^-m Signup and view all the answers

What is the final expression for a after determining m and n?

a = k r^-1 Signup and view all the answers

If the acceleration a is proportional to r^n and v^m, what does a represent?

Acceleration Signup and view all the answers

What is the dimension of Kinetic Energy?

ML2T-2 Signup and view all the answers

Which formula represents the distance traveled by a car under constant acceleration?

x = ½ at2 Signup and view all the answers

In dimensional analysis, which of the following quantities is required to derive the formula for distance?

Acceleration Signup and view all the answers

Which of the following is the dimension of Area?

L2 Signup and view all the answers

What relationship does the dimension of Momentum have with mass and velocity?

MLT-1 Signup and view all the answers

If the dimensions of velocity are LT-1, what are the dimensions of Acceleration?

LT-2 Signup and view all the answers

Which statement about Potential Energy is true?

P.E = Mgh Signup and view all the answers

In the dimensional analysis for deriving the distance traveled, what value is derived for n and m?

n = 2, m = 1 Signup and view all the answers

What is the standard unit of mass in the International System (SI)?

Kilogram Signup and view all the answers

What is the basis for the definition of the second since 1960?

Radiation from the Cs137 atom Signup and view all the answers

Which of the following conversions is correct?

1 inch = 2.54 cm Signup and view all the answers

What is the volume of a cube with each edge measuring 5.35 cm in SI units?

1.53 x 10^-4 m³ Signup and view all the answers

How is density defined in relation to mass and volume?

Density = Mass / Volume Signup and view all the answers

Which of the following is NOT a standard unit in the International System (SI)?

Milligram Signup and view all the answers

What does dimensional analysis denote in physics?

The physical nature of a quantity Signup and view all the answers

Which unit is used for measuring luminous intensity in the International System (SI)?

Candela Signup and view all the answers

Study Notes

Course Information

Course title: Physics (F/R-001)
Instructor: Dr. Mohaned Mohmmed
Institution: Badr University, Assiut
Lectures: Face-to-face
Textbooks:
- Physics for Scientists and Engineers, R.A. Serway and J.W. Jewett, 8th Edition, Thomson Books/Cole 2013
- College Physics, PAUL PETER URONE, ROGER HINRICHS, OpenStax

Evaluation

Mid-term exam: 10 Marks
Quizzes/ assignments: 10 Marks
Practical exam: 20 Marks
Oral exam: 10 Marks
Final exam: 50 Marks

Course Topics & Timeline

Chapter 1: Physics and Measurement (2 weeks)
Chapter 2: Statics and Torque (4 weeks)
Mid-term Exam (1 week)
Chapter 3: Fluid Statics (2 weeks)
Chapter 4: Fluid Dynamics and its Biological and Medical Applications (2 weeks)
Chapter 5: Physics of Hearing (2 weeks)
Final Exam

Chapter 1: Physics and Measurement

Topics:
- Standards of length, mass, and time
- Conversion of units
- Dimensional Analysis

1. Standards of Length, Mass, and Time

Length: Based on the speed of light in vacuum
- Meter: Distance light travels in vacuum in 1/299,792,458 sec
Mass: Based on the mass of a platinum-iridium (Pt-Ir) alloy cylinder
- Kilogram: Mass of a Pt-Ir alloy cylinder
Time: Based on the atomic clock
- Second: Based on the characteristic frequency of radiation from the Cs-137 atom (9,192,631,770 oscillations)

International System (SI) of Units

Established in 1960
Mechanics:
- Length: Meter (m)
- Mass: Kilogram (kg)
- Time: Second (s)
Other quantities:
- Electric current: Ampere (A)
- Temperature: Kelvin (K)
- Luminous intensity: Candela (cd)
- Amount of substance: Mole (mol)

2. Conversion of Units

Used to convert units from one system (e.g., cgs, mks, British) to another
Examples provided for converting between inches, feet, miles, meters, centimeters, grams and kilograms

3. Dimensional Analysis

Method for checking and deriving formulas
Dimensions of basic quantities:
- Length (L)
- Mass (M)
- Time (T)
Dimension of physical quantities can be expressed in terms of L, M, and T
Examples of applying dimensional analysis provided showing how to check the validity of equations and derive some formulae

Quick Quizzes and Answers

Quick Quizzes related to different topics
Answers given for each quick quiz

Homework Problems

Problems related to dimensional analysis and Newton's Law of universal gravitation.

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Description

Test your knowledge on the fundamentals of physics measurement in this quiz on Chapter 1. Explore topics such as standards of length, mass, time, unit conversions, and dimensional analysis. Challenge yourself and reinforce your understanding of these essential concepts.