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## Homework Statement

Let E = 4 N/C in the x direction and B = 4 T in the -z direction. Let an electron move in the y-direction

with speed 1m/s. What is the magnitude of the acceleration of the electron in m/s2?

## Homework Equations

F

_{m}=qv X B

F

_{electric field}=qE

F=ma

## The Attempt at a Solution

I plugged in values and found F

_{m}to equal -6.408X10

^{-19}N and found F

_{electric field}to also equal -6.408X10

^{-19}N. I'm not sure my sign is right on the first one because I was confused about the flow of the electron versus the flow of the current...

F=ma, and since I know the mass of an electron and I'm trying to find the acceleration, I think that I should add my two forces to get a total force, which equals ma. I did this and got a=4.508X10

^{-7}. I think this is wrong, though, because I think an acceleration would be larger than that.