Asked by noname

A 5.00g lead bullet is fired into a wooden fence post. The initial speed of the bullet is 250m/s, and when it comes to rest, half its kinetic energy goes into heating bullet. How much does the bullet's temperature increase?

Answers

Answered by Sonja
The heat capacity of lead is C = .127.10^3J/kg*K (I googled it)
So the heat capacity of the bullet is Cm=.635 J/K
The kinetic energy of your bullet is KE = 1/2*5.10^-3 250^2 J

Therefore the increase in temp will be 1/2KE/(Cm) = 123 degrees
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