- #1
quicksilver123
- 173
- 0
Homework Statement
Find the momentum of a 140eV photon.
Homework Equations
momentum equations
e=mc^2
The Attempt at a Solution
140eV=2.24*10^-17 J
p=mv
p=(E/c^2)c
p=E/c
p=(2.24*10^-17)/(3*10^8)
p=7.466666*10^-26
Is this correct? (other than significant digits)