One coil is placed on top of another. the bottom coil is connected in series to a battery and a switch. with the switch closed, there is a clockwise current in the bottom coil. when the switch is opened, the current in the bottom coil decreases abruptly to zero. what is the direction of the induced current in the top coil, as seen from above while the current in the bottom coil decreases?

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.)

Acold front traveling southeast collided with a warm front traveling northwest the following map shows the weather on monday the day the two fronts collided which of these describes the weather forecast for mississippi on tuesday and wednesday

Relative to the ground below, how many joules of potential energy does a 1000-kg boulder have at the top of a 5-m ledge?