What is the magnitude of the electrostatic force experienced by one elementary charge at a point in an electric field where the electric field strength is 3.0 x 103 newton’s per coulomb? a. 1.0 x 103 N c. 3.0 x 103 N
b. 1.6 x 10-19 N d. 4.8 x 10-16 N

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum. determine the term.