## When to use the Planck's Constant?

$c=\lambda v$

Kimberly Bauer 4E
Posts: 51
Joined: Thu Jul 25, 2019 12:17 am

### When to use the Planck's Constant?

I notice we used 6.63 x 10^34 in an example in class when finding the wavelength, is there any other formulas I might need to use the equation for?

Sean Tran 2K
Posts: 65
Joined: Sat Aug 17, 2019 12:17 am

### Re: When to use the Planck's Constant?

I believe that Planck's Constant (h) is also able to be used when determining the energy level of an electron.
En = -hR/n2

Lauren Sanchez 3D
Posts: 52
Joined: Sat Aug 24, 2019 12:17 am

### Re: When to use the Planck's Constant?

i believe that Planck's Constant (h) is also used in De Broglie's Wave Equation

Chloe Alviz 1E
Posts: 102
Joined: Sat Aug 17, 2019 12:17 am

### Re: When to use the Planck's Constant?

You can use Planck's constant when you are determining the energy of a photon (E = hv) and the energies at different n levels ( En = -hR / n^2)
It is also used in De Broglie (lambda = h/p).

Indy Bui 1l
Posts: 99
Joined: Sat Sep 07, 2019 12:19 am

### Re: When to use the Planck's Constant?

Planck's constant is used to relate the relationship between frequency and the energy of a proton, so it is used in the equation E=hv, h being Planck's constant.

Jillian C 4C
Posts: 51
Joined: Sat Jul 20, 2019 12:16 am

### Re: When to use the Planck's Constant?

Planck's constant can be used to find the energy emitted or absorbed at different levels with En = -hR / n^2. This has n= energy level, h=Planck's constant, R=constant value, and E=energy.

britthanul234
Posts: 51
Joined: Wed Sep 18, 2019 12:21 am

### Re: When to use the Planck's Constant?

Planck's constant is basically used whenever the variable "h" appears in a formula. As of now, I feel like it appears when talking about energy emitted or absorbed at n=some energy level or when determining the energy of a photon (E=hv).