Four (R1 =500 S2, R2 =1000 S2, R3 =1000 S2 and R4 =800 S2) resistors are connected across a battery with open-circuit voltage of 16V, which has an
internal resistance of 200 S2, as is shown in Fig.1. A voltmeter of internal
resistance 2000 12 is connected across the fourth resistor, as is shown in the figure.
What is the reading on the voltmeter? Choose the one correct option.
A 1.90 V
E 4.48 V
B 5.16 V
F 5.80 V
С 3.04 V
G 6.40 V
D 3.88 V
H 1.02 V

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.)