What is the magnitude and direction of the electric field at a point midway between a -7.0 µC and a +6.0 µC charge 2.5 cm apart? Assume no other charges are nearby.
I thought I was approaching the problem correctly, but I'm not getting the right answer. I used the equation:
E = k(Q1 + Q2)/L^2
In the end, a friend gave me the formula to calculate the solution, but did not explain as to how he acheived the equation. Would anyone be kind enough to highlight how he got to this point:
\frac{M_{man} X}{M_{woman}}
And then:
12 - ans - X = d
I guess the center of mass remains the same, but how can I use this to calculate the distance between the man and the woman after the man pulls on the rope?
Here is the problem that I'm faced with:
A 52 kg woman and a 80 kg man stand 12.0 m apart on frictionless ice.
(a) How far from the man is their center of mass (CM)?
(b) If they hold onto the two ends of a rope, and the man pulls on the rope so that he moves 2.8 m, then how far from...