Questions from College Physics

Q: An infinitely long conducting cylinder sits near an infinite conducting sheet (

An infinitely long conducting cylinder sits near an infinite conducting sheet (side view in the diagram). The cylinder and sheet have equal and opposite charges; the cylinder is positive. (a) Sketch...

Q: Why do roads leading to the top of a mountain have switchbacks

Why do roads leading to the top of a mountain have switchbacks that wind back and forth? [Hint: Think of the road as an inclined plane.]

Q: A mango falls to the ground. During the fall, does

A mango falls to the ground. During the fall, does Earth’s gravitational field do positive or negative work Wm on the mango? Does the mango’s gravitational field do positive or negative work WE on Ear...

Q: A copper washer is to be fit in place over a steel

A copper washer is to be fit in place over a steel bolt. Both pieces of metal are at 20.0°C. If the diameter of the bolt is 1.0000 cm and the inner diameter of the washer is 0.9980 cm, to what tempera...

Q: The period of oscillation of an object in an ideal spring-

The period of oscillation of an object in an ideal spring-and-mass system is 0.50 s and the amplitude is 5.0 cm. What is the speed at the equilibrium point?

Q: A car is driving directly north on the freeway at a speed

A car is driving directly north on the freeway at a speed of 110 km/h, and a truck is leaving the freeway driving 85 km/h in a direction that is 35° west of north. What is the velocity of the truck re...

Q: Can static friction do work? If so, give an example

Can static friction do work? If so, give an example. [Hint: Static friction acts to prevent relative motion along the contact surface.]

Q: In the design of a roller coaster, is it possible for

In the design of a roller coaster, is it possible for any hill of the ride to be higher than the first one? If so, how?

Q: The field between the plates of a parallel plate capacitor, E

The field between the plates of a parallel plate capacitor, E = Q/(ϵ0A), is due to the superposition of equal contributions from the charges on the two plates. Therefore, each plate exerts an electric...

Q: A green laser has a wavelength of 532 nm. A grating

A green laser has a wavelength of 532 nm. A grating and a lens are used to split the beam into three parallel beams spaced 1.85 cm apart. (a) What range of slit spacings can the grating have to produc...