(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A deuteron (the nucleus of an isotope of hydrogen) has a mass 3.34× 10−27 kg

and a charge of +1.60 × 10−19 C. The deuteron travels in a circular path with

a radius of 7.32mm in a magnetic field with magnitude 2.00T.

(i) What is the angle between the velocity and magnetic field vectors?

(ii) Calculate the speed of the deuteron.

(iii) Calculate the time required for it to make half a revolution.

2. Relevant equations

F=qVBsin(theta)

R=(mv)/(qB)

3. The attempt at a solution

I think I know how to solve parts ii and iii using the second equation listed, rearranged for V, then the time period would be ((pi)R)/V (half revolution)

However with part i it seems to me there is no way of calculating the angle without knowing V? Am I missing something here? It seems stupid that they would ask for a calcualtion including V without working it out first, which comes after

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# Charged particle in magentic field problem

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