Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps?

a. fluorescent lamps are more efficient than incandescent lamps.
b. fluorescent lamps operate at a higher temperature than incandescent lamps.
c. fluorescent lamps dissipate more energy as light instead of heat than incandescent lamps.
d. fluorescent lamps produce light with less glare than incandescent lamps.

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)