# What is the wavelength of an electron with a velocity of #3.85xx10^6" m/s"#?

##### 1 Answer

The wavelength of an electron with a velocity of

#### Explanation:

The de Broglie equation relating the wavelength of an electron to its velocity is:

where

where:

**Known/Given:**

Planck's constant,

velocity of electron,

mass of electron,

**Unknown:**

momentum

wavelength

**Equations:**

**Solution:**

**1. Calculate momentum.**

**2. Calculate wavelength:**

Because

**Answer:**

The wavelength of an electron with a velocity of