Tuesday
September 30, 2014

Homework Help: Physics please clarify

Posted by Mary on Tuesday, September 4, 2007 at 10:05pm.

A charge of +1q is fixed to one corner of a square, while a charge of -3q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center of the square, so the potential is zero at each of the two empty corners?





For Further Reading


Physics please clarify - bobpursley, Tuesday, September 4, 2007 at 9:06pm
stop looking for formulas. Voltage is q/distance. It is a scalar, so you add all the contributing charges. In this case,

voltage at empty corner= voltage from each charge
0= q/s -3q/s + x/d
where s is the side distance, and d is the distance from the empty corner to the center. d=.707s.
solve for x.


I am sorry for being such a bother,I appreciate all of the help you've given to me but I am still not getting this one! I think I am over thinking this problem. This is what i did so far please tell me if I am on the right track:

q/s - 3q/s + X/d = 0

-2q/s + X/d = 0

X/d = 2q/s

X= (2q/s)(d)

from here I am stumped.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - A charge of +2q is fixed to one corner of a square, while a charge of...
Physics please clarify - A charge of +2q is fixed to one corner of a square, ...
physics - A charge of +4q is fixed to one corner of a square, while a charge of...
Physics please clarify - Posted by Mary on Monday, September 3, 2007 at 12:40pm...
Physics please clarify - Posted by Mary on Monday, September 3, 2007 at 12:40pm...
Physics - Identical point charges of +1.1 C are fixed to three of the four ...
Physics - Identical point charges of +2.9 C are fixed to three of the four ...
Help Please! - Charges of −4q are fixed to diagonally opposite corners of...
physics - A positive point charge and a negative point charge have equal ...
Physics - On the lower left corner of a square is a fixed charge qLL = 1.5x10^-9...

Search
Members