A beam of electrons moving left at 3 x10^7 m/s passes at right angles to a uniform magnetic field that is 2x10^-4 T. What force acts upon each electron in the beam? (Remember the charge on an electron is 1.6 x10^-19C)

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.

70 give a real life example showing how sensory neurons work with the motor neurons