How much heat must be added to 4.55 kg of copper to change it from a solid at 1358 K to a liquid at 1358 K? Latent heat of fusion for copper is Lf=20.7*104J/kg.

Can energy be transferred from one object to another? explain.

A helium-filled balloon is launched when the temperature at ground level is 27.8°c and the barometer reads 752 mmhg. if the balloon's volume at launch is 9.47 * 10^{4} 4 l, what is the volume in liters at a height of 36 km, where the pressure is 73.

Another Gas Laws Question ... Assume you are a diver. As you go deeper, the volume of the gas in your tank should go down. Is this because the water pressure around you is increasing or because the temperature of the water is decreasing?

Write an explanation of what would happen to the ME, PE, and KE of the ball from the top of the drop to the middle of the drop, and then at the bottom.

What increases the amount of light that bends passing through a lens a. greater curve b. smaller curve c. thicker edge d. thicker center

The kinetic energy of an object depends on both the objects mass and velocity. a. True b. False

How does a walkie-talkie work and why do people still use them?

A 125-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope.

Jose wandered 4 kilometers at 2 kilometers per hour. How long did Jose wander?

What is the acceleration of a 10kg pushed by a 5n force