Answer to Question #336031 in Molecular Physics | Thermodynamics for Avi

Question

If all the energy of a 20-g bullet travelling at 1km/s is converted into heat, how many calories are generated?

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Answer 1

$$Q=\frac{mv^2}{2}\\ =\frac{0.020*(1000)^2}{2}=10000\:\rm J=2390\: cal$$