How much voltage is required to make 4 amperes flow through a resistance of 20 ohms?

What is happening to the energy of an apple as it falls from a tree?

What is the total displacement of a dog that runs north 80 returns to its master and then runs south 20 meters

Ax = 44.4 m and Ay = 25.1 m Find the direction of the vector.

Which transfer of energy occurs mainly through the process of convection?

Irene exerts a net force of 10.0N on a 6.7kg cart for 3.0 seconds. What is the acceleration of the cart?

When is the zebra in motion when it is not moving

1) What happens when two negatively charged tape strips are placed near each other?

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

What causes an air conditioned to turn on

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?