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An engine pumps out water continously th...

An engine pumps out water continously through a hose with a veclocity v.If m is the mass per unit length of the water jet ,the rater at which the kinetic energy is imparted to water is :

A

`1/2 mv^2`

B

`1/2 mv^3`

C

`1/2 m^2v^2`

D

`mv^3`.

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