Homework Help: Physics

Posted by Josh on Thursday, August 6, 2009 at 6:14pm.

There are two positive charges (+4C on the left and +6C on the right) that are both separated by an arbitrary distance. In order not to experience any net electric force where would you place the third charge.

I say to the left of the +4C charge am i right?

Physics - drwls, Thursday, August 6, 2009 at 6:28pm
The third charge should be placed between the +4C and +6C charges so that the forces cancel out. That will NOT be to the left of the 4C charge.
If x1 and x2 are the distances to the +4 and +6 charges,
4/x1^2 = 6/x2^2
(x2/x1)^2 = 3/2
x2/x1 = 1.225
x1/(x1 + x2) = 1/2.225 = 0.449

Answer this Question

Related Questions

physics - Two charges are fixed in place with a separation d. One charge is ...
Physics - Two positive charges of 6 �C are separated by a distance of...
Physics - A positive charge +q is located to the left of a negative charge -q. ...
science - what are the forces on two charges of +0.44c and +2.4c, if they are ...
Physics - A positive charge +q1 is located to the left of a negative charge -q2...
Physics - Two charges (+4C and -3C)are separated by .00002m. What is the ...
physics - Two charges, -37 µC and +3 µC, are fixed in place ...
Physics - Two infinitely long wires are separated by a distance of d = 1.4 ...
Physics - Two point charges Q1 and Q2 are 4C. They are 10cm apart. At what ...
Physics - Two positive charges of 6 �C are separated by a distance of...

For Further Reading

First Name:
School Subject:
Answer: