A lead bullet just melts when stopped by an obstacle.Assuming that 25% of heat is absorbed by the obstacle,find velocity of bullet if its initial temperature is 27 C...............[Melitng pt of lead=327 C , specific heat of lead=0.03 cal/g/C , latent heat of fusion of lead=6 cal/g ,J=4.2J/cal]Answer= 410m/s

Deepak Patra , 10 Years ago

Grade upto college level