A lead bullet penetrates into a solid object and melts. Assuming that – InterviewSolution

1.	A lead bullet penetrates into a solid object and melts. Assuming that 50% of its kinetic energy was used to heat it, calculate the initial speed of the bullet. The initial temperature of the bullet is 27∘C and its melting point is 327∘C.Latent heat of fusion of lead =2.5×104 Jkg−1 and specific heat capacity of lead =125 J /kg K.
Answer» A lead bullet penetrates into a solid object and melts. Assuming that $50$ % of its kinetic energy was used to heat it, calculate the initial speed of the bullet. The initial temperature of the bullet is $27^{\circ} C$ and its melting point is $327^{\circ} C$ . Latent heat of fusion of lead $= 2.5 \times 10^{4} J {k g}^{- 1}$ and specific heat capacity of lead $= 125 J /kg K$ .

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