A 40 kg dog is sitting on top of a hillside and has a potential energy of 1,568 J. What is the height of the hillside? (Formula: PE = mgh) 3.9 m
4.0 m
39.2 m
40.0 m

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

Which of the following best explains what happens when the kinetic energy of particles in a liquid state decreases?

How does radioactive dating allow scientist to accurately date rocks