A 6-g lead bullet traveling in 20°C air at 300 m/s strikes a flat steel plate and stops.What is the final temperature of the lead bullet? (Assume the bullet retains all heat. )The melting point of lead is 327°C.The specific heat of lead is 0.128 J/g·°C.The heat of fusion of lead is 24.5 J/g.

Question

Quizplus · Accepted Answer

The kinetic energy of the bullet is converted into heat, raising its temperature. The energy required to heat the bullet to its melting point and melt it is less than the energy available, so the bullet reaches its melting point of 327°C.

A 6-G Lead Bullet Traveling in 20°C Air at 300