A firehose must be able to shoot water to the top of a building 28.0 m tall when aimed straight up. Water enters this hose at a steady rate of 0.500 m^3 and shoots out of a round nozzle.
A. What is the maximum diameter this nozzle can have?
B. If the only nozzle available has a diameter twice as great, what is the highest point the water can reach?