a football plyer throws a ball with a mass of 0.34kg what is the gravitational potential energy of the ball when it is 5.0 m above the ground?

5. what might happen if you were to remove all light from the setup after the discs have all become buoyant? describe what you would see. explain why this would occur with relation to cellular processes like respiration. [referring to an ap biology lab in which spinach discs are placed in a sodium bicarbonate solution and exposed to light.]