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April 18, 2015

April 18, 2015

Posted by **Andrew** on Thursday, February 3, 2011 at 4:59am.

A]4.5 x 10e6 N/C

B]3.1 x 10e6 N/C

C]1.6 x 10e6

D]4.8 x 10e6

2)A +2.0 nC pont ahrge isplaced at one corner of a square (1.5m on each side), and a -3.0 nC charge is placed on a corner diagonally away from the first charge. What is the magnitude of the electric fled at either the two unoccupied corners?

A]20 N/C

B]14 N/C

C]4 N/C

D]12 N/C

E]8 N/C

- Physics -
**drwls**, Thursday, February 3, 2011 at 6:07amBoth problems involve the adding of two vectors. Get the magnitude of each vector using Coulomb's law.

You should make an effort to do these yourself.

In problem 2), you end up adding two perpendicular E-field vectors with magnitudes

k*2*10^-9/(1.5)^2 and

k*3*10^-9/(1.5)^2

The magnitude is, from the Pythagorean Theorem,

(k/2.25)*10^-9 sqrt13

Using 9.0*10^9 for k, I get 14.4 N/C

- Physics -
**Anonymous**, Friday, October 3, 2014 at 5:00am4.8 x 10^6 N/C

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