Then maybe I'm misunderstanding the notes. So in the question, we're given B, r, and p.d. and we are asked to solve for mass (m). In our notes, the only equations it gives us are for radial acceleration, F of the magnetic field=qvBCos(theta), F=ma, and qB=mv/r. We're not told how to plug in...
I ended up putting a negative in the radial acceleration equation in my notes...I missed these classes and copied notes from a friend. In our book it has it as a=v^2/r which will allow me to solve for V. Thank you for the help.
We're given the equation qB=mv/r which is simple enough. I just don't know how to find the velocity given the acceleration through a potential difference. I tried using the radial acceleration equation given to me but I end up with the square root of a negative...and that breaks math... I...