Types of E

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rachel liu 3k
Posts: 56
Joined: Sat Aug 17, 2019 12:16 am

Types of E

Postby rachel liu 3k » Thu Oct 10, 2019 6:47 pm

Are the variables "E" is E=hc/wavelength, and the Ek in the threshold energy equation the same?

nicolely2F
Posts: 133
Joined: Sat Sep 14, 2019 12:17 am

Re: Types of E

Postby nicolely2F » Thu Oct 10, 2019 6:53 pm

They are different. "E" is the overall energy of the photon while "Ek" is the kinetic (movement) energy of that electron when it interacts with a photon.
Last edited by nicolely2F on Thu Oct 10, 2019 9:37 pm, edited 1 time in total.

Alexa Mugol 3I
Posts: 54
Joined: Sat Aug 17, 2019 12:17 am

Re: Types of E

Postby Alexa Mugol 3I » Thu Oct 10, 2019 8:50 pm

The E in E=hc/wavelength is the energy per photon, while the Ek in the threshold energy equation is the kinetic energy that is released when the energy of the incoming light is greater than the threshold energy.

Alan Wu
Posts: 61
Joined: Sat Sep 14, 2019 12:16 am

Re: Types of E

Postby Alan Wu » Fri Oct 11, 2019 5:48 pm

E(photon) = hv, whereas Ek or E(electron) = 1/2 mv^2

E(photon) = threshold energy + Ek


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