# A rectangular trough, 1.6 m long, 0.60 m wide, and 0.35 m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge. When you pull the plug, at what speed does water emerge from the hole?

1 answer

###### Question:

A rectangular trough, 1.6 m long, 0.60 m wide, and 0.35 m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge.

When you pull the plug, at what speed does water emerge from the hole?

When you pull the plug, at what speed does water emerge from the hole?

## Answers

Answer:v = 2.61 m/sExplanation:Given that,Length of a rectangular trough, l = 1.6 mBreadth of a rectangular trough, b = 0.6 mDepth of a rectangular trough, h = 0.35 mWe need to find the speed with which water emerge from the hole. It is a concept of efflux. The velocity of efflux is given by :[tex]v=\sqrt{2gh}\\\\v=\sqrt{2\times 9.8\times 0.35}\\\\v=2.61\ m/s[/tex]So, water will emerge from the hole with a speed of 2.61 m/s.

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