A bullet of mass 10 10- kg moving with a speed of 20ms- hits...

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A bullet of mass 10 10- kg moving with a speed of 20ms- hits an ice block (0c) of 990 g kept at rest on a frictionless floor and gets embedded in it. If ice takes 50% of K.E, for melting, then the mass of the ice block that has melted is(J = 4.2J/Cal ) (Latent heat of ice = 80 cal/g)

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