Recent content by marrone

Homework Statement Find the magnetic flux through a solenoid of length 31.2 cm, radius 1.5 cm, and 610 turns that carries a current of 3.8 A. (in Wb) Homework Equations B_solenoid=u0*N*I/L Flux= B *A The Attempt at a Solution So to find the magnetic field, I plugged the...

Well, what I had been doing is making E2 negative and adding it to a positive E1, but thinking about what redbelly said, a field will always point from positive to negative, which is in a negative direction. So I made both of them negative and added them together, and I got the right answer...

Problem 1: Homework Statement What is the electric field at a point midway between a -8.64uC and 6.97uC charge 7.63 cm apart? Take the direction towards the positive charge to be positive and assume no other charges nearby. Homework Equations E=kQ/r2 The Attempt at a Solution So...