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### How do I use Planck's constant?

Posted: **Sun Apr 15, 2018 6:12 pm**

by **Rogelio Bazan 1D**

I am reviewing the photoelectric effect and the behavior of light is described as photons but I am unsure where to use Planck's constant in an equation all I know is that Planck's constant is 6.63x10^-34 J*sec

Anyone mind telling me where to go from here I am just feeling confused, Thank you.

### Re: How do I use Planck's constant? [ENDORSED]

Posted: **Sun Apr 15, 2018 6:15 pm**

by **Jasmine Emtage-1J**

In the equation for the energy per photon, E=hv, h is Planck's constant and it's multiplied by frequency (v). I hope that helps!

### Re: How do I use Planck's constant?

Posted: **Sun Apr 15, 2018 9:07 pm**

by **Kate Manganaro 1F**

Planck's constant is used in the equation E=hv where E is the amount of energy, h is Planck's Constant, and v is the frequency of the wave.

### Re: How do I use Planck's constant?

Posted: **Sun Apr 15, 2018 9:19 pm**

by **Steve H**

When is planck's constant applicable though? Like when would I use it to answer a question?

### Re: How do I use Planck's constant?

Posted: **Sun Apr 15, 2018 9:53 pm**

by **Rebecca Chu 1C**

Planck's constant is used to calculate the energy of one photon in a wavelength. (Dr. Lavelle showed us an example where we use Planck's constant in Friday's lecture.)