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A tank has a small hole 5 m below the water surface. Take g = 10 m/s^2. What is the efflux speed?
A5 m/s
B50 m/s
C10 m/s
D7 m/s
Answer & Solution
Correct answer: C. 10 m/s
Torricelli's law gives v = sqrt(2gh) = sqrt(2 x 10 x 5) = 10 m/s.
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