If an object has a rest energy of approximately 0.51 MeV, the object is most likely...

Question

Question

If an object has a rest energy of approximately 0.51 MeV, the object is most likely

Answer 1

Answer #1

rest energy = mc^2

where m = mass ,

c = speed of light

0.51*1.6*10^-13 = m*(3*10^8)^2

m = 9.1*10^-31 kg

so this is equal to the mass of electron

so the object is most likely to be an electron

Answer 2

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