Awater tank is emptied through a pipe with an outlet 5m below the water surface level. what is the exit velocity? a) 2.1m/s b) 9.9 m/s c) -12.3m/s d)-4.8m/s e) 15.3m/s

The correct answer is option 'b': 9.9 m/s

Explanation:

We know that for an ideal fluid the velocity of exit from a tank with the height of water 'h' is given by Torricelli's Law as

where,

'g' is acceleration due to gravity

'h' is the level of water

Applying the given values we obtain velocity as

answer:

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