A lead bullet penetrates into a solid object and melts. Assuming that 40% of its kinetic energy is used to heat it, the initial speed of bullet is: Given, initial temperature of the bullet = 127°C, Melting point of the bullet = 327°C, Latent heat effusion of lead = 2.5 x 10 4 J Kg -1 , Specific heat capacity of lead = 125J/kg K)
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Verified by ExpertsThe correct answer is:
B
V = 500 m/s
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