Help please, it is a major grade.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

If a simple machine reduces the strength of a force, what must be increased?

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?