Find the weight of a 65 kg person

Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

Debris produced by mining is called