Questions from College Physics

Q: A child of mass 15 kg climbs to the top of a

A child of mass 15 kg climbs to the top of a slide that is 1.7 m above a horizontal run that extends for 0.50 m at the base of the slide. After sliding down, the child comes to rest just before reachi...

Q: A 64 kg sky diver jumped out of an airplane at an

A 64 kg sky diver jumped out of an airplane at an altitude of 0.90 km. She opened her parachute after a while and eventually landed on the ground with a speed of 5.8 m/s. How much energy was dissipate...

Q: During basketball practice Shane made a jump shot, releasing a 0

During basketball practice Shane made a jump shot, releasing a 0.60 kg basketball from his hands at a height of 2.0 m above the floor with a speed of 7.6 m/s. The ball swooshes through the net at a he...

Q: On a cold day, Ming rubs her hands together to warm

On a cold day, Ming rubs her hands together to warm them up. She presses her hands together with a force of 5.0 N. Each time she rubs them back and forth, they move a distance of 16 cm with a coeffici...

Q: On a graph of vx versus time, what quantity does the

On a graph of vx versus time, what quantity does the slope of the graph represent?

Q: An ideal monatomic gas is taken through the cycle in the PV

An ideal monatomic gas is taken through the cycle in the PV diagram. (a) If there are 0.0200 mol of this gas, what are the temperature and pressure at point C? (b) What is the change in internal ener...

Q: Find the work done by gravity on the sliding crate.

Find the work done by gravity on the sliding crate.

Q: Some forms of cancer can be treated using proton therapy in which

Some forms of cancer can be treated using proton therapy in which proton beams are accelerated to high energies, then directed to collide into a tumor, killing the malignant cells. Suppose a proton ac...

Q: Brad tries out a weight-loss plan that involves repeatedly lifting

Brad tries out a weight-loss plan that involves repeatedly lifting a 50.0 kg barbell from the floor over his head to a height of 2.0 m. If he is able to complete three such lifts per minute, how long...

Q: Copper and aluminum are being considered for the cables in a high

Copper and aluminum are being considered for the cables in a high- voltage transmission line where each must carry a current of 50 A. The resistance of each cable is to be 0.15 Ω per kilometer. (a) I...