- #1
Physics53
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Hi, stuck on this question, hoping someone could help
1. Homework Statement
Two identical photons of wavelength 4.22x16^-7m are created when a certain amount of matter M, is converted into energy, calculate the Mass (M)
E= hf which is hc/wavelength
E= 4.71x10^-19J
E= mc^2
so M= E/c^2
M= 4.71x10^-19J/ 3.00x10^8^2
M= 5.23x10^-36 kg
BUT the answer is 1.047x10^-35 kg, how?[/B]
1. Homework Statement
Two identical photons of wavelength 4.22x16^-7m are created when a certain amount of matter M, is converted into energy, calculate the Mass (M)
The Attempt at a Solution
E= hf which is hc/wavelength
E= 4.71x10^-19J
E= mc^2
so M= E/c^2
M= 4.71x10^-19J/ 3.00x10^8^2
M= 5.23x10^-36 kg
BUT the answer is 1.047x10^-35 kg, how?[/B]
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