Explain the effects of forces on any object​

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.

Where do magnetic lines of force enter earth?

The strong nuclear force acts over a small distance than the electrostatic force. true or false