Recent content by nautola

Homework Statement A 4 Ω resistor, 14 mH inductor, and 99 µF capacitor are connected in series to a 65 V (rms) source having variable frequency. Find the heat dissipated in the circuit during one period if the operating frequency is twice the resonance frequency. Answer in units of J...

I had almost that...but not quite within 1%. Which is what our online homework requires. So my approach was correct, just not some value. Thanks.

Homework Statement A uniform non-conducting ring of radius 0.816 cm and total charge 6.76 µC rotates with a constant angular speed of 1.73 rad/s around an axis perpendicular to the plane of the ring that passes through its center. What is the magnitude of the magnetic moment of the...

I got the total charge on the center, and the ratio of the capacitances and set up a system of equations where the net charge (et charge is the charge of capacitor 1 or capacitor 3, or the middle equivalent capacitor) equals the sum of the charges. So I solved it and got that the charge on C2...

Homework Statement http://screencast.com/t/9KET4sNSAQWj If the picture isn't showing up, the order of the capacitors is 1 -> 2 & 4 (parallel) -> 3, with a battery in the circuit. There's a dielectric in C2 with k = 2.71. There's a battery with v = 5.33v in the picture. Capacitors: C1 = 11.2 μF...

Homework Statement http://screencast.com/t/B4865iOOLzX What is the charge on the 32 μF centered- upper capacitor? Answer in units of μC Homework Equations Q = CV 1/c = 1/c1 + 1/c2... The Attempt at a Solution I found the charge across the entire thing and then divided that by...

I'm majoring in physics right now, but I'm considering switching to computer science. I'm currently enrolled in electromagnetism. Since the class started I noticed something about myself: I'm not enjoying a second of it. I can't stand doing the homework, I'm disinterested in the course...

Homework Statement A ring of radius 6 cm that lies in the yz plane carries positive charge of 7 μC uniformly distributed over its length. A particle of mass m carrying a charge of −7 μC executes small oscillations about the center of the ring on its axis with an angular frequency of 15...

I got 12968.1 N/C. Is my method correct?

Homework Statement Find the x-component of the electric field at the origin due to the full arc length for a charge of 3.8 μC and a radius of 1.9 m. The value of the Coulomb constant is 8.98755 × 109 N · m2/C2. Homework Equations E = kq/r^2 dq = q dθ λ = Q/ (R θ) The Attempt...

I thought that too. But sadly, alpha and beta aren't equal to each other.

Actually alpha and beta are the angles at the bottom. And I'm clueless as to how to use those angles to do the necessary trigonometry to find the components of A and B.

Is the answer x=0? Because it seems to me that the bar is pushing straight up on the wall, so that just makes the wall push straight down and be done. My main confusion comes from the free body diagram that I'm looking at. I keep setting it up and I'm not sure if the forces should go...

Homework Statement A solid sphere of radius R and mass M is placed in a wedge. The inner surfaces of the wedge are frictionless. Determine force exerted at point A and point B. Homework Equations ƩF=0 Ʃτ=0 The Attempt at a Solution I'm pretty baffled about how to apply these...

Homework Statement A vertical cylinder is sitting against a wall. It has a weight of 20N and no given radius. A force is applied tangentially in a vertical direction on the side not against the wall. The coefficient of friction is 0.499 for all surfaces. What is the maximum force so that...