H
hoangloc0209


mp=1,0073
mn=1,0087
Na=6,02*10^23
c=3*10^8
Mhe=4g
hat anpha co khoi luong 4,0015u
nang luong toa ra khi tao thanh 1 gam heli?
mn=1,0087
Na=6,02*10^23
c=3*10^8
Mhe=4g
hat anpha co khoi luong 4,0015u
nang luong toa ra khi tao thanh 1 gam heli?