Can someone help me on these please and thank you

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

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.

What is the relationship between the direction of motion of the balloon and the wind currents