At a crime scene, the forensic investigator notes that the 8.2 g lead bullet that was stopped in a doorframe apparaently melted completely on impact. Assuming the bullet was fired at room temperature (20 degrees celcius), What is the minimum muzzle velocity of the gun that fired the bullet?(adsbygoogle = window.adsbygoogle || []).push({});

Anyone have idea on how to get muzzle velocity and what they mean by that?

so I figured this to be a latent heat of fusion with the Latent heat constant=25kJ/kg or 5.9kcal. So u apply Q=mcdelt T going from 20 celcius to 0 and then add the heat of fusion Q=mL and you can solve for total heat. How do you go from there to get the muzzle velocity? Could anyone help?

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# Homework Help: Help on Heat problems

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