The equation (pg. 13 of textbook)  [ENDORSED]

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Andrew Uesugi 3I
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Joined: Wed Sep 21, 2016 2:56 pm

The equation (pg. 13 of textbook)

Postby Andrew Uesugi 3I » Sat Oct 08, 2016 2:02 pm

Hello there, I seem to be having a problem understanding this formula.

So the formula is 1/2mv^2 = hv - Φ. I keep reading it, but I can't understand what its purpose or the variables are. I would highly appreciate it if somebody manages to explain it in simple terms.



Jocelyn Sandoval 3B
Posts: 26
Joined: Wed Sep 21, 2016 2:59 pm

Re: The equation (pg. 13 of textbook)  [ENDORSED]

Postby Jocelyn Sandoval 3B » Sat Oct 08, 2016 2:20 pm

So the formula is basically saying
kinetic energy= energy of a photon - work function or threshold energy

In other words,
"1/2mv^2" is what is used to find the kinetic energy.
"hv" is the energy of the photon.
"Φ" is the work function.

Hope this helps!

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