## De Broglie's Equation

Lauren Bui 1E
Posts: 54
Joined: Sat Jul 20, 2019 12:15 am

### De Broglie's Equation

When do I use De Broglie's equation?

katrinawong3d
Posts: 40
Joined: Sat Aug 17, 2019 12:17 am

### Re: De Broglie's Equation

Use it when you have mass and velocity and need wavelength.

Goyama_2A
Posts: 107
Joined: Sat Aug 24, 2019 12:17 am

### Re: De Broglie's Equation

I agree with the above post but remember that the equation can only be used to calculate the wavelength of an object that has mass. When the object of the question doesn’t have mass, i.e. light, we use other equations such as c=(lambda)v.

Sydney Pell 2E
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

### Re: De Broglie's Equation

As long as you have two of the three variables (mass, velocity, or wavelength), you can use De Broglie's Equation to solve for the remaining one. Usually, questions will ask to solve for the wavelength, but the equation could also be manipulated to solve for m or v as well.

kpang_4H
Posts: 55
Joined: Fri Sep 20, 2019 12:17 am

### Re: De Broglie's Equation

De Broglie's equations applies as long as the particle in question has p, momentum(mv), and has wavelike properties. Depending on the question, you can use the equation to find mass, velocity, or wavelength.

Kaylee Clarke 1G
Posts: 103
Joined: Fri Aug 30, 2019 12:15 am

### Re: De Broglie's Equation

De Broglie's equation is used to find wavelength.