Q.
An open tank filled with water has a hole at its bottom. If the total pressure at the bottom of the tank is 8 atmospheres the velocity efflux is nearly (1 atmosphere =105N/m2 )
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a
9.8 m/s
b
12 m/s
c
24 m/s
d
40 m/s
answer is D.
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Detailed Solution
8×105=103×v22p=hdg⇒8×105=h×103×9.8⇒h=8×105103×9.8=8009.8 Velocity efflux v=2×9.8×8009.8=40m/sec
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