Recent content by kimberlyann9

Thanks!

Homework Statement Charges q and -Q lie on the x-axis at x = 0 and x = d respectively. Charge -Q has a greater magnitude than q. In which region or regions on the x-axis is there a position where the electric field is zero? A) x < 0 B) x < 0 and x > d C) 0 < x < d and x > d D) x > d E)...

They both have the same force magnitude because they both have q for the charge.

Homework Statement Two particles, 'A' with charge and mass of q and m and 'B' with charge and mass of -q and 2m, each enter at right angles to a uniform magnetic field with the same velocity. Compare the circular paths that each begin upon entering the magnetic field. A) A experiences the same...

Okay great, thanks for your help!

Homework Statement You have two 120V light bulbs, one 25W and one 100W, that are normally connected in parallel with 120V across each. Your friend had what seemed like a good idea which was to connect them in series across a 240V power line. However, one of them burned out immediately. Which...

Homework Statement You need to modify a simple charging RC circuit (power supply, resistor, and capacitor in series) to maintain the same maximum current but lower the the time constant and make it charge faster. Which of the following will accomplish it? A) Same R, lower C. B) Same R...

Homework Statement You are holding a conducting loop of copper and looking at its circle. Behind it is a long current-carrying wire carrying the current from left to right. As you pull the loop toward you, what is the direction of current flow if any? A)No way to tell B)Counter-clockwise...

I'm so confused! So F and v are always perpendicular so that is why there cannot be any work done. F=ILB and there is current through the wire so does that have something to do with it?

Homework Statement Consider 2 parallel wires with currents running down them in the same direction. The first is fixed in place unable to move. The second is allowed to move. They exert an attractive magnetic force on one another, and the second wire moves towards the first. The second moves...

Thanks guys I figured it out.

Homework Statement A 2.60-N metal bar, 1.50 m long and having a resistance of 10.0 ohms, rests horizontally on conducting wires connecting it to the circuit shown in the figure . The bar is in a uniform, horizontal, 1.60-T magnetic field and is not attached to the wires in the circuit. What...