Problem 1: here is what i did: knew to find the acceleration I needed to use a=QE/M, but since I didn't have E I had to find it. Used F(mag field)=Q*V*B*Sin(theta). I found theta from drawing the ijz axis and using trig, I got 59 degrees. After I solved this I plugged it in to F=QE to get E. Then plugged that into a=QE/M, and got an incorrect answer..not sure where I went wrong. Problem 2: for a: equations I used: P=MV R=MV/QB -> V= RQB/M plugged 2nd into 1st, M cancelled, answer wasn't correct. eh? for b: not sure i know the equation for this problem...same as in classical physics? thanks guys!