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?

    <p>$v = r\omega$, where $v$ is linear velocity, $r$ is radius, and $\omega$ is angular velocity</p> Signup and view all the answers

    Name two fundamental forces in nature.

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

    What are the two basic characteristics of simple harmonic motion?

    <p>Periodic motion and restoring force proportional to displacement</p> Signup and view all the answers

    What is a reversible process? Provide an example.

    <p>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.</p> Signup and view all the answers

    Write the perfect gas equation and explain the terms.

    <p>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.</p> Signup and view all the answers

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

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

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

    <p>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.</p> Signup and view all the answers

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