PLEASE HELP!! What does the electromagnet in an electric motor do?

A. It transforms mechanical energy into electrical energy.
B. It transforms magnetic force into electrical energy.
C. It transforms electrical energy into mechanical energy.
D. It transforms electrical energy into magnetic force.

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.