Here's my problem:(adsbygoogle = window.adsbygoogle || []).push({});

A particle with charge 4.5E-19 C travels in a circular orbit with radius .465 m due to the force exerted on it by a magnetic field with magnitude 1.7 T and perpendicular to the orbit.

a) What is the magnitude of the momentum p of the particle?

I used the equation R=(mv)/(qB) and calculated mv (linear momentum) to be 3.6E-19 kg*m/s.

b) What is the magnitude of the angular momentum L of the particle?

Herein lies the rub! Angular momentum = v/R = qB/m

I don't know velocity or mass independently, only their product (mv). So how do I calculate angular momentum?

Thanks for any help!

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# Homework Help: Magnetic fields ahhh!

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