A water pump moves water from the bottom of a well to the surface that is 200 m higher. After running for 8 hours, the pump has moved 100,000 kg of water. How much work has the pump done?
(A) 6.8 x 103
(B) 2.0 x 107
(C) 1.96 x 108
(D) 1.57 x 109

What if? physicists often measure the momentum of subatomic particles moving near the speed of light in units of mev/c, where c is the speed of light, and 1 mev = 1.6 ✕ 10−13 kg · m2/s2. based on this, what are the units of momentum for a high-speed subatomic particle in terms of fundamental si units?

What causes the formation of ocean currents?

What are the necessary conditions for fusion?