Kinetic energy of electrons

Moderators: Chem_Mod, Chem_Admin

Aishwarya Kosgi 1F
Posts: 87
Joined: Wed Sep 30, 2020 10:00 pm

Kinetic energy of electrons

Postby Aishwarya Kosgi 1F » Mon Oct 12, 2020 11:16 pm

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
Posts: 90
Joined: Wed Sep 30, 2020 10:01 pm

Re: Kinetic energy of electrons

Postby AdilaAhmed3I » Mon Oct 12, 2020 11:18 pm

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

Tiao Tan 3C
Posts: 100
Joined: Wed Sep 30, 2020 9:59 pm

Re: Kinetic energy of electrons

Postby Tiao Tan 3C » Tue Oct 13, 2020 1:25 am

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

Gian Boco 2G
Posts: 81
Joined: Wed Sep 30, 2020 9:36 pm

Re: Kinetic energy of electrons

Postby Gian Boco 2G » Thu Oct 15, 2020 8:53 am

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.


Return to “Properties of Electrons”

Who is online

Users browsing this forum: Google [Bot] and 1 guest