What is the change in potential energy of an energetic 65 kg hiker who makes it from the floor of death valley to the top of mt. whitney?

Which type of wave can travel without a medium

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.