問題詳情

8. Water (mass density ρ) fows at speed ui； through a garden hose with cross sectional area aoand emerges at pressure ps from a nozzle of cross sectional area a0/2. The pressure at thefaucet is
(A)


(B)


(C)


(D)


(E) none of the above.

參考答案

答案：A
難度：計算中-1
書單：沒有書單，新增