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Anonymous
physics help?
A 7.00-g lead bullet traveling at 480 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in temperature of the bullet?
1 Answer
Relevance
- oubaasLv 72 weeks ago
specific heat capacity c of lead = 0.129 J/(g*°C)
half KE = m/4*V^2 = 7/(4000)*480^2 = 7/40*48^2 = 403 joule
403 = m*c*ΔT
ΔT = 403/(0.129*7) = 447°C
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