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**Proton's Velocity**

## Homework Statement

What is the speed of the proton?

## Homework Equations

B=u0qv/(4pir^2)

## The Attempt at a Solution

I rearranged the equation so that I solve for velocity, v. I determined that r^2 is 1.8*10^-5 m. I plugged in 1.1*10^-3 for B. The q for the proton is 1.6*10^-19.

Plugging all that and the constants in gave me a velocity of 1.2*10^8 m/s.

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