If the current from the left wire is 5.5 A and the current from the right is 15 A, what is the magnitude of the magnetic field, in teslas, at point P?

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire