What is the gain in GPE when a brick of 2.00 kg is lofted up by 11.5 m?

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.

Can you match these to the correct definition

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.