25 A boy pulls a wagon with a force of 45 N by means of a rope that makes an angle of 40" with the ground. how much work does he do in moving the wagon 50 m? (2 Points) O07KJ 1.72 k 2.5 KJ O 3kG A total of 1014 kg of water per second flows over a waterfall 25 m high. If 50% of the power this flow represents could be converted into electricity , How many 100 watts light bulb could be supplied? (2 Points) O 5,500 bulbs 9,850 bulbs 10,750 bulbs 12,250 bulbs