A person is pulling a wagon of heavy rocks for the garden with a force of 12 N. Another person wants to help and pushes the wagon from behind with a force of 8 N. The frictional force is 6 N. What is the net force on the wagon?

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.