Jawabanmu

2014-03-28T18:18:02+07:00
T= 127+273= 400k (4 x 10^2)
Ek= 3/2 x k x T
Ek= 3/2 x 1.38 x 10^-23 x 4 x 10^2
Ek= 3/2 x 5.52 x 10^-21
Ek= 8.28 x 10^-21