- #1
ZedCar
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Homework Statement
Homework Equations
de Broglie wavelength λ = h/p
E^2 = p^2 c^2 + (m0)^2 c^4
L-compton = (h-bar) / mc
The Attempt at a Solution
I'm trying to work out the wavelength of an electron with a kinetic energy of 1keV
So I intend on using
de Broglie wavelength λ = h/p
and
Relativistic mass equation
E^2 = p^2 c^2 + (m0)^2 c^4
then inputting the rest mass energy of an electron (511 keV) into the formula above. Though do I need to convert this first to kg?
Also, I'd still be left with two unknowns in mass eqn i.e. E and p, so how do I obtain the value for E?
Or should I instead be using the Compton wavelength formula i.e.
L-compton = (h-bar) / mc
The question just asks for the wavelength.