Recent content by kirax105strike

Homework Statement I have a sphere with two thin concentric shells with radii R2 and R3 with charges q1 and q2. I am trying to find the formulas for find the electric field for A and B. The Attempt at a Solution I found C to be E = k * (q1+q2)/c^2 but I cannot seem to figure out the...

Thank you for the reply. So to find the X and Y vectors of the individual charges I need to find theta and multiply each magnitude by its respective sin/cos?

The formula was from an example in the book where they used the length of the curve as r but I am guessing I have the wrong formula.

Homework Statement Calculating the horizontal component of an electric field at the origin of a semi circle. The image link is: http://imgur.com/SXYs4Rp The Attempt at a Solution I've tried using the formula k∏(Q)/r (8.98755*10^9)∏(-7.85*10^-6) / .113 = -1.961 * 10^6. Can anyone see...

Thanks for you reply. Here is what gave me those results: Fy = ((8.99*10^9)(-7*10^-6)(8*10^-6))/5.385^2 Fx = ((8.99*10^9)(-7*10^-6)(4*10^-6))/4.123^2 Fnet = sqrt((1.736*10^-2)^2 + (1.481*10^-2)^2 ) = 0.23 N

Homework Statement Trying to find the magnitude of the resulting force on the -7 nC charge at the origin and my answers arent matching up. Is there a step I am missing? I used the pythagorean to find r for both ΔOrigin-Q1 and ΔOrigin-Q2. Here is the graph: http://imgur.com/90TQmQU...