With what velocity must an electron travel so that its momentum is equal to that of a photon with a wavelength of `5000Å(h=6.6xx10^(-34)Js,m_(e)=9.1xx10^(-31)` Kg)

Explanation

To solve the problem, we need to find the velocity of an electron such that its momentum is equal to that of a photon with a wavelength of 5000 Å (angstroms).

### Step-by-Step Solution:

1. **Understand the relationship between momentum and wavelength**:
The momentum \( p \) of a photon is given by the formula:
\[
p = \frac{h}{\lambda}
...