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jennylove:
An electric field measured near a point charge of 3.00×10−6 C has a strength of 1.50×105 N/C. How far is the point from the source charge? 0.30 m 0.42 m 0.36 m 0.095 m
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jennylove:
i think its 0.36 ?
justjm:
Did you use the formula \(E=k\frac{Q}{r^2}\)?
jennylove:
i did ,but i went to do it again and actually got 0.42
jennylove:
|dw:1585701245096:dw|
justjm:
Okay I'll do it. BTW, a big trap in electric field questions are units, because typically problems like to mess around. So be careful with your units :)
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jennylove:
like this right?
jennylove:
yes could you double check yourself, thank you (: i may have made an error
justjm:
I get .42 as well
jennylove:
Awesome ! thanks !
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