Led bulbs are six times as efficient as incandescent bulbs. if a household replaced ten 100-watt bulbs with led bulbs, how many watts would be saved? 833 watts 400 watts 1700 watts 175 watts 600 watts

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)