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1. |
A jet of water issued from a nozzle with a velocity 20 m/s on flat plate moving away from it at 10 m/s. The cross-sectional area of the jet is 0.01 m2 and the density of water = 1000 kg/m3. The force developed on the plate is |
A. | 1000 N |
B. | 100 N |
C. | 10 N |
D. | 2000 N |
Answer» B. 100 N | |