Recent content by thebigbluedeamon

So would the direction of the field in the y-direction be negative and the direction in the x-direction be positive? I guess I would end up with something like... Bnet = Bx - By Sounds easy enough for me.

I cannot figure how this works.. A wire carries a 7.00 A current along the x-axis and another wire carries a 6.00 A current along the y-axis. What is the magnetic field at point p located at x=4.00m and y=3.00m. Since each wire carries its own magnetic field, my instinct is saying that I...

If someone could help me start this problem, it would be greatly appreciated. Charges of equal magnitude 1.00X10^-15 C and opposite sign are distributed over the inner and outer surfaces of the cell wall. Find the force on the potassium ion (K+) if the ion is, (a) 2.70 micro-meters from the...

Of course it is. I just had a mental block. I wouldn't have caught the "(6-r)" though. Thanks for your help.

Okay...so I took the square root of both sides of the equation, but that doesn't seem to get me very far. I end up with: sqrt(q1/q2) = (r-6)/(r-4) And frankly I don't know how to solve for r in this situation. I could use Maple or something, but it seems that this problem shouldn't...

I did have a typo...It was supposed to be a 6 instead of a 4 in the first equation. Let me try this and hopefully I can solve.

I need a little guidance in this problem... Two point charges lie along the y-axis. A charge of q1=-9 mu*C is at y=6.0m, and a charge of q2=-8.0 mu*C is at y=-4.0 m. Locate the point (other than infinity) at which the total electric field is zero. So, I made the statement E1y =...