Posted by **Ann** on Tuesday, January 23, 2007 at 6:34pm.

Two charges, -37 µC and +3 µC, are fixed in place and separated by 2.8 m.

(a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie between the two charges.)

how many m from the positive charge, not between the two charges?

- physics -
**Galen**, Friday, November 15, 2013 at 1:03am
This question is pretty weird, but basically what you want to do is set these two charges up in an equation with the distance and have them equal to zero.

K(q_1)/(r+2.8)^2 - k(q_2)/r^2 = 0

q_1 - the first (negative) charge

q_2 - the second (positive) charge

r - this is the distance between the two charges where the net charge will equal zero

2.8 - this value will be different for other people I'm assuming, so it's just the original distance between the charges, so it basically stands for d.

At this point I'm hoping that you know how to solve for r using basic algebraic skills.

This is the right equation and I used it so it works. Also make sure you know that the spot is outside the two charges, not inside, which is why it's subtraction.

* As a side note, the K is Coulombs constant, however solving symbolically you will find that these will cancel

My final equation after all of this looked something like this:

sqrt(q_1/q_2) = 1 + d/r

## Answer this Question

## Related Questions

- physics - Two charges, -17 and +3.6 µC, are fixed in place and separated by 3.2...
- physics 2 - Two charges, -17 and +3.6 µC, are fixed in place and separated by 3....
- Physics - Two charges, -15 and +4.5 µC, are fixed in place and separated by 2.8 ...
- physics - I have these problems that I keep doing and keep missing. If someone ...
- Physics - Two particles having charges of +0.500nC and +8.00nC are seperated by ...
- physics - I want to understand this concept more than anything so advice as well...
- physics - two charges, -16uC and +4uC, are separated by three meters. a) Where ...
- physics - There's a problem my professor assigned, but I'm not sure which ...
- Physics 221 - Two fixed charges -4.0 C and -5.0 C, are separated a certain ...
- physics - Three charges are fixed to an x, y coordinate system. A charge of +12...

More Related Questions