Physics Concepts Quiz

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Questions and Answers

Which pair of forces are considered fundamental forces in nature?

Magnetic and electrostatic forces
Normal and frictional forces
Tension and air resistance forces
Gravitational and electromagnetic forces (correct)

What is the difference between scalars and vectors?

Scalars represent motion, while vectors represent forces
Scalars are used in physics, while vectors are used in mathematics
Scalars have magnitude only, while vectors have both magnitude and direction (correct)
Scalars have direction only, while vectors have both magnitude and direction

What is an example of an elastic collision?

A bouncing ball hitting the ground and losing some kinetic energy
A dropped object falling to the ground
Two billiard balls colliding on a frictionless table (correct)
A car colliding with a wall and coming to a stop

What is the relation between linear velocity and angular velocity?

$v = r\omega$, where $v$ is linear velocity, $r$ is radius, and $\omega$ is angular velocity (C) Signup and view all the answers

Name two fundamental forces in nature.

The two fundamental forces in nature are gravity and electromagnetism. Signup and view all the answers

What are the two basic characteristics of simple harmonic motion?

Periodic motion and restoring force proportional to displacement (A) Signup and view all the answers

What is a reversible process? Provide an example.

A reversible process is a thermodynamic process that can be reversed without leaving any trace on the system or its surroundings. An example is an ideal gas expanding or compressing very slowly. Signup and view all the answers

Write the perfect gas equation and explain the terms.

The perfect gas equation is given by $PV = nRT$, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin. Signup and view all the answers

Draw the position-time graph for an object with uniform motion.

The position-time graph for an object with uniform motion is a straight line with a constant slope representing constant velocity. Signup and view all the answers

Define the terms amplitude, frequency, and wavelength of a wave.

The amplitude of a wave is the maximum displacement of the medium from its rest position, the frequency is the number of complete oscillations of a wave per unit time, and the wavelength is the distance between two consecutive points in a wave that are in phase. Signup and view all the answers