Kinetic energy of electrons

[Aishwarya Kosgi 1F]

Hi! I was wondering how you would calculate the kinetic energy of an electron that has been ejected off a metal surface by a light if you're only given the velocity? I tried to use the 1/2mv^2 but I wasn't sure what mass to use. Thanks!

[AdilaAhmed3I]

You would use the mass of an electron which is approximately 9.1093837015 x 10^-31 kg.

[Tiao Tan 3C]

^^I agree with the previous response.
Also, you could see a list of these constants on Sapling under "resources" >>--- "Chempendix".

[Gian Boco 2G]

Yep reference sheets for constants are useful! I imagine that our assessments in the future, we will be provided with these needed constants along with our periodic table.