CALCULATE THE BINDING ENERGY OF AN ALPHA PARTICLE
The mass of 2 protons = 2 x 1.007825 amu
The mass of 2 neutrons = 2 x 1.008665 amu
Total Mass = 4.032981 amu
The actual mass, as measured by a mass spectrometer, is 4.002800 amu.
Delta m = 4.032981-4.002800 = 0.030180
NOW,
Binding energy = 0.030180 * 931 = 28.097 Which is the answer,,,,
BUT,
The Formua to find B.E is delta m . c^2
so the ans should be like this ,
= 0.030180 * (3*10^8)^2.... am I right ?