this should be an easy problem. I thought I had it, butmy answer is off. An elec

Question

this should be an easy problem. I thought I had it, butmy answer is off. An electron is accelerated eastward at 1.84X10^9 m/s^2by an electric field. Determine the magnitude anddirection of the electric field. Here's what I got: Clearly the direction is westward. That part iseasy. when I calculate the E field, I know it is only in thex-direction but my answer is off by 10^4 and should some how have (m) inthe resulting units as shown below (answer from back of the book) 10.5 mN/C,westward. What am I doing wrong?

Explanation / Answer

AAAAAAH!  I've been studying too hard.  I just realized that the m doesn't stand for meters, it stands for milli, and I was off  by 10^3, not 10^4.  Sorry, I feel stupid now

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