Energy of photon  [ENDORSED]


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diana_calderon_4L
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Energy of photon

Postby diana_calderon_4L » Thu Oct 18, 2018 9:12 pm

When it comes to energy of a photon, there is a specific equation to calculate it right??

Chem_Mod
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Re: Energy of photon

Postby Chem_Mod » Thu Oct 18, 2018 9:21 pm

Yes, E = hv or E = hc/.

Catherine Kim 3K
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Re: Energy of photon

Postby Catherine Kim 3K » Thu Oct 18, 2018 9:21 pm

Yes! You would use E=hv

g orloff 1J
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Re: Energy of photon

Postby g orloff 1J » Thu Oct 18, 2018 9:25 pm

use E=hv for energy of a photon

Henry_Phan_4L
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Re: Energy of photon

Postby Henry_Phan_4L » Sun Oct 21, 2018 7:48 pm

Chem_Mod wrote:Yes, E = hv or E = hc/.



How did you get that second equation?

Yiting_Gong_4L
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Re: Energy of photon

Postby Yiting_Gong_4L » Sun Oct 21, 2018 7:55 pm

When would we use E=ch/wavelength instead of E=hv, vice versa?

ryanhon2H
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Re: Energy of photon  [ENDORSED]

Postby ryanhon2H » Sun Oct 21, 2018 9:02 pm

Henry_Phan_3B wrote:
Chem_Mod wrote:Yes, E = hv or E = hc/.



How did you get that second equation?


You substitute for v in E=hv to get E=hc/λ

Use the light equation c = vλ, solve for v to get v = c/λ, and substitute back into E=hv for v

NatBrown1I
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Re: Energy of photon

Postby NatBrown1I » Sun Nov 04, 2018 11:06 pm

Depending on the specific variables that you have you can use either the equation:
E= hv
or
E = hc/ lambda

The second equation is just a combination of the first equation and lambda = c/v.

205458163
Posts: 33
Joined: Wed Jun 26, 2019 12:15 am

Re: Energy of photon

Postby 205458163 » Tue Jul 02, 2019 11:43 am

E=hv or you can get E=hc/λ from combine C=λv and E=hv.

Brian Kwak 1D
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Re: Energy of photon

Postby Brian Kwak 1D » Wed Jul 03, 2019 10:39 am

Like everyone stated before you would use both the equations C=λv and E=hv. It’s important to note that the equation with speed of light is only applicable to problems dealing with light. You can then reconfigure the equations to solve for the variable you are looking for.

Zachary Menz 1D
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Re: Energy of photon

Postby Zachary Menz 1D » Sat Jul 06, 2019 4:46 pm

The method you use to calculate the energy of a photon depends on what the problem gives you. The equation for the energy of a photon E (energy of photon) = h (planck constant) * v (frequency). can be substituted into the previous equation if they give you values other than frequency.

Sisi Li 1F
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Re: Energy of photon

Postby Sisi Li 1F » Sat Jul 06, 2019 8:31 pm

You can use E=hv, or combine this with lamba=c/v to get E=hc/lambda

somyapanchal1D
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Re: Energy of photon

Postby somyapanchal1D » Sat Jul 06, 2019 8:54 pm

Yes. In order to calculate the energy of a photon you use the equation E=hv.
E=energy of a photon in Joules
h=Planck's constant (6.626*10^-34 J*s)
v=frequency of wave in Hz


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