A 10 kg ball is thrown up into the air with a initial KE of 40 J. Approximately how high will the ball rise?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.