Two balls, labeled as A and B, are launched at the same launch angle and with the same launch velocity. If ball A is twice heavier than ball B, ignoring the air resistance and any other frictions (select all that apply). The two balls will have the same range
Ball A's range will be twice of the ball B's range
Ball B's maximum height will be twice of the ball A's maximum height.
The two balls will reach the same maximum height.
Ball A's range will be half of the ball B's range.
Ball B's maximum height will be half of the ball A's maximum height.

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.)

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

The least penetrating form of radiation is