Recent content by physics213

Homework Statement In the figure below, the current in the long, straight wire is I1 = 4.8 A, and the wire lies in the plane of the rectangular loop, which carries 9.7 A. The dimensions shown are c = 0.10 m, a = 0.15 m, and l = 0.45 m. Find the magnitude and direction of the net force exerted...

Wouldn't the second part of this question (What is the charge on the capacitor?) just be Q=CV? I can't get the correct answer from that though...

ok I got the correct answer for the current through the resistors problem! Thanks a lot.

So the current in the resistor that is in series with the capacitor would be zero. Which would mean that the current in the other two resistors should be equal to each other, correct? Which would also mean the other two resistors are in series if I'm not mistaken.

Homework Statement IMAGE ATTACHED! In the figure below, suppose that the switch has been closed for a length of time sufficiently long enough for the capacitor to become fully charged. (R = 11.0 k, R2 = 15.0 k, R3 = 3.00 k, ΔV = 9.30 V) Find the steady-state current in each resistor...

whoops! Forgot the include the questions in the post, haha: a) How much charge remains on each capacitor (3 and 2 microF)? b) What is the current in the resistor? Thanks guys.

Homework Statement IMAGE IS ATTACHED! The given pair of capacitors in the figure below are fully charged by a 14.0 V battery. The battery is disconnected and the circuit closed. Answer the following after the circuit has been closed for 1.80 ms. Homework Equations V=IR...

I have a question about Kirchhoff's rule, specifically the "loop rule". How do you take capcitors into consideration when doing these problems. I know how to deal with voltages and resistors, but my textbook doesn't mention what to do when capcitors are in the loop. Thanks.

I would assume upwards but I'm not really sure. This seems like a really simple concept but i can't figure it out.

well another similar problem had the electric field pointing downward with the particle having a negative charge.

Homework Statement A ping pong ball covered with a conducting graphite coating has a mass .005 kg and a charge -4 microC. What electric field will exactly balance the weight of the ball? Homework Equations qE = mg The Attempt at a Solution I know how to get the magnitude of the...

Yeah I see now. The Teflon acts as a dielectric and from there it isn't too hard to find the Voltage and Capacitance. Thanks a lot again!

Homework Statement For a TeflonTM-filled parallel-plate capacitor having a plate area of 175 cm2 and insulation thickness of 0.0500 mm, determine the following: a.)capacitance b.)max volatge Homework Equations C = Q/V C = (constant)(A/d) The Attempt at a Solution I understand the gist...

Got the correct answer! Thanks a lot.

Homework Statement On planet Tehar, the free-fall acceleration is the same as that on Earth, but there is also a strong downward electric field that is uniform close to the planet's surface. A 2.00 kg ball having a charge of 5.00 µC is thrown upward at a speed of 20.1 m/s. It hits the ground...