Question 1.33

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Tim Foster 2A
Posts: 73
Joined: Fri Sep 29, 2017 7:07 am

Question 1.33

Postby Tim Foster 2A » Thu Oct 12, 2017 9:20 pm

Hey! I'm having trouble with part c of this problem. When I use the equation wavelength=c/frequency I get around 12 nm, but the back of the book says 8.8

Hannah Guo 3D
Posts: 56
Joined: Fri Sep 29, 2017 7:06 am

Re: Question 1.33

Postby Hannah Guo 3D » Thu Oct 12, 2017 9:50 pm

From b, we know E(work function)= 1.66* 10^-17 J.
For c, E(photon)=E(kinetic)+E(work function)=2.25*10^-17 J; and then, λ=hc/E(photon)=8.8 nm

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