. What do Ry, Ry, R' y, Rz, stand for in relative density

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

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.