a 1.5 kg hawk is sitting on a branch 8 m above the ground. what is the hawk’s gpe? (gravitational potential energy) show your work and include all units.

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

If a balloon is taken outside on a very cold day, what will occur?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?