A 5.0-m-diameter garden pond holds 5.9 times 10^{,3};{rm kg} of water.?
Solar energy is incident on the pond at an average rate of 400 {rm{ W/m}}^2. If the water absorbs all the solar energy and does not exchange energy with its surroundings, how many hours will it take to warm from 15^circ {rm{C}} to 25 ^circ {rm{C}}?