hannahchilegirl4762 hannahchilegirl4762
  • 13-09-2019
  • Engineering
contestada

A water 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

Respuesta :

InesWalston
InesWalston InesWalston
  • 19-09-2019

Answer:

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

[tex]v=\sqrt{2gh}[/tex]

where,

'g' is acceleration due to gravity

'h' is the level of water

Applying the given values we obtain velocity as

[tex]v=\sqrt{2\times 9.81\times 5}=9.90m/s[/tex]

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