A 5.0-g lead bullet traveling in 19.0°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 final temperature of the lead bullet will be its melting point, 327°C, because the kinetic energy converted into heat upon impact will be sufficient to heat the bullet to its melting point but not beyond, as any additional energy would go into changing the state of the lead from solid to liquid, not increasing its temperature further.

A 50-G Lead Bullet Traveling in 19