試題詳解

45. A tank containing water to a height of 16.0 m also contains air above the water at a gauge pressure of 1.00 atm. Water flows out from the bottom through a small hole. What is the water’s speed?
(A) 13 m / s
(B) 19 m / s
(C) 4.2 m / s
(D) 23 m / s
(E) 6.5 m / s