Calculating the Velocity of a Proton using Magnetic Field and Electric Charge

AI Thread Summary
The discussion focuses on calculating the velocity of a proton using the equation B = (μ0 * q * v) / (4 * π * r^2). The user rearranged the formula to solve for velocity, substituting r^2 as 1.8 * 10^-5 m and B as 1.1 * 10^-3. The charge of the proton, q, is given as 1.6 * 10^-19, leading to a calculated velocity of 1.2 * 10^8 m/s. Additionally, the user seeks clarification on applying the right-hand rule to determine the proton's direction. The discussion emphasizes both the calculation and the application of physics principles.
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Proton's Velocity

Homework Statement


MN4Ep.jpg


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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Oh yeah, do you guys know the specific right hand rule for this situation? I need to use it to figure out the direction of this proton.
 

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