Questions from College Physics

Q: Which of the following is true for the entropy change of a

Which of the following is true for the entropy change of a system that undergoes a reversible, adiabatic process? (a) ΔS < 0 (b) ΔS = 0 (c) ΔS > 0

Q: Suppose you are throwing two dice in a friendly game of craps

Suppose you are throwing two dice in a friendly game of craps. For any given throw, the two numbers that are faceup can have a sum of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. Which outcome is most proba...

Q: A block on the end of a horizontal spring is pulled from

A block on the end of a horizontal spring is pulled from equilibrium at x = 0 to x = A and released. Through what total distance does it travel in one full cycle of its motion? (a) A/2 (b) A (c) 2A (d...

Q: For a simple harmonic oscillator, which of the following pairs of

For a simple harmonic oscillator, which of the following pairs of vector quantities can’t both point in the same direction? (The position vector is the displacement from equilibrium.) (a) Position and...

Q: When an object moving in simple harmonic motion is at its maximum

When an object moving in simple harmonic motion is at its maximum displacement from equilibrium, which of the following is at a maximum? (a) Velocity, (b) Acceleration, or (c) Kinetic energy

Q: An object of mass m is attached to a horizontal spring,

An object of mass m is attached to a horizontal spring, stretched to a displacement A from equilibrium, and released, undergoing harmonic oscillations on a frictionless surface with period T0. The exp...

Q: A 75-kg cross-country skier glides over snow as

A 75-kg cross-country skier glides over snow as in Figure P11.33. The coefficient of friction between skis and snow is 0.20. Assume all the snow beneath her skis is at 0°C and that all the...

Q: Consider the situation in Quick Quiz 13.4. Is the

Consider the situation in Quick Quiz 13.4. Is the subsequent total mechanical energy of the object with mass 4m (a) Greater than, (b) Less than, or (c) Equal to the original total mechanical energy?...

Q: If the amplitude of a system moving in simple harmonic motion is

If the amplitude of a system moving in simple harmonic motion is doubled, which of the following quantities doesn’t change? (a) Total energy (b) Maximum speed (c) Maximum acceleration (d) Period

Q: A simple pendulum is suspended from the ceiling of a stationary elevator

A simple pendulum is suspended from the ceiling of a stationary elevator, and the period is measured. If the elevator moves with constant velocity, does the period (a) Increase, (b) Decrease, or (c) R...