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(試題疑義:無答案)42. Water flows through a horizontal pipe and then out into the atmosphere, where d2/d1 = 2. The speed of the water at the output of
the pipe is v1 = 10 m/s. The desity of water is 1g/cm3
. What is the gauge pressure at the left section? (1 atm = 1.01 × 105 Pa )
(A) 4.6 atm
(B) 4.8 atm
(C) 5.0 atm
(D) 5.2 atm
(E) 5.4 atm
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統計: A(6), B(2), C(1), D(0), E(0) #2356603
統計: A(6), B(2), C(1), D(0), E(0) #2356603