In much the same way, the sun warms you by radiation on a clear day. The space between the sun and Earth has no air to transfer thermal energy. Radiation is the transfer of energy by waves moving through space. Heat lamps used in restaurants are a familiar example of radiation.

What are the applications of electromagnetic waves

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

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.)