Recent content by kasparov5

:wink:

oh no...i think it is wrong because what if (1/h)-(1/sqrt(L^2+h^2)) turns out negative? I might get a positive or negative answer. What does this mean? Is it wrong?

I think I got the answer as being E_net = 2k(Q/L)*[(1/h)-(1/sqrt(L^2+h^2))] where Q/L is of course lambda. I got this by substituting like you said and then plugging in L and 0 for x to find the definite integral. The electric field is in the negative x direction. Please tell me if this is...

I did that. I removed the constants 2k(lambda) (2 coming from multiplying by 2 since there are two bars) and i have an integral from the length L to 0 of (x)/(x^2 +h^2)^3/2 dx...but i do not know how to integrate this. There is an h inside there that technically is also a constant, but I...

I arrived at that answer by converting cos theta to variables L and h and I multiplied that by twice the electric field caused by the charge at the very end of the bar. Clearly, I forgot the fact that it is indeed a LINE of charge. Can you show me how to begin the integration for this...

I think I did it without calculus. After realizing that the vertical components cancel out. I then realized that the net electric field produced by both rods will be simply 2 times the horizontal component of the electric field produced by one of the two charges. After some plugging and...

Homework Statement Two thin rods of length L lie on the x axis. One of them has a charge of -Q uniformly distributed along its length and is positioned between x = -L and x = 0. The other one has a charge of +Q uniformly distributed along its length and is positioned between x = 0 and x =...