PLZ HELP which phrase describes blackbody radiation

An apple is falling from a tree. disregarding air resistance, which diagram shows the free-body diagram of the force or forces acting on the apple?

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell