The charge on a charged sphere is:

concentrated at its center
distributed uniformly throughout its volume
clustered on its center
distributed uniformly over its surface

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be a. equal to the weight of the car. b. less than the force of friction exerted upon the car. c. equal to the force of friction exerted upon the car. d. greater than the weight of the car.