Recent content by mousey

1. Expression for the magnitude of an electric field

Thank you. I'm just wondering, the problem says q1 is greater than q2, and both are positive, so wouldn't I subtract E1-E2? Do I integrate both and then subtract?

3. Expression for the magnitude of an electric field

k(q_1-q_2)/(R^2+x^2)^3/2
4. Help with Coulomb's law: Net electrostatic force

That makes perfect sense. Thank you.
5. Help with Coulomb's law: Net electrostatic force

I tried to explain it further in my reply to haruspex.
6. Help with Coulomb's law: Net electrostatic force

these are my equations. Basically in terms of a right triangle, I used the "legs" to calculate for each vector component instead of the hypotenuse as the whole force.
7. Help with Coulomb's law: Net electrostatic force

Right, I tried that answer and it was marked wrong, so I tried finding the force for the individual vector components (table in the lower left), by using just the distance in the x and y directions, but in meters in place of "d" for d^2. Then I added the components (i of q2 + i of q3, j of q2 +j...
8. Help with Coulomb's law: Net electrostatic force

Thank you! I tried uploading a picture of my work but I couldn't figure out how to initially. Also here's the original problem in all it's glory.
9. Help with Coulomb's law: Net electrostatic force

I tried just calculating the force with Coulomb's law, then calculating the forces for each vector individually and adding, but I got it wrong both ways