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The question asks for the wavelength of an electron that was ejected from a metal surface with a velocity of 3.6 x 10^-3 km/s. I know that one way to solve this is by using the De Broglie equation, but I was just wondering if it was possible to solve this by solving for Kinetic Energy of the electron (KE=0.5mv^2), and plugging this energy into the equation E=vh/λ. Thanks!
I was wondering if you could use the same type of equation as you do for light to relate energy and wavelength, which is E=hc/λ. But instead of using the speed of light, I would substitute in the velocity of the particle. I wasn't sure whether this was a valid technique or not though.
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