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100 gram nail is being hit by hammer of ...

100 gram nail is being hit by hammer of 1.5 kg with a velocity of 60 m/s. if one fourth of the energy is being utilized to melt the nail, then find the change in temperature. specific heat of nail= .42 J per gram per degree Celsius.

A

`1.5^@ C`

B

`2^@ C`

C

`2.5^@ C`

D

`3^@ C`

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