Temperature of an ideal 'gas whose molecules have average kinetic energy 1 e V is

Explanation

If we treat the proton gas as an ideal gas, then from Eq. 20-16, the average energy of the protons is `K_("avg")=3//2kT`, where k is Boltzmann constant.
Calculation: Solving that equztion for T and using the result of a. yield
`t=(2K_("avg"))/(3k)=((2)(5.75xx10^(-14)J))/((3))(1.38xx10^(-23)J//K))`
`~~3xx10^(9)K`
The temperature of the core of the Sun is ony about `1.5xx10^(7)K`, thus fusion int he sun.s core must involve protons whose energies are far above the average energy.