Recent content by unhip_crayon

Homework Statement The two wires carrying the currents are infinite in length. i1 = 5.00 A out of the paper and i2 = 7.00 A into the paper. a = 40.0 cm and b = 30.0 cm. Calculate the direction of the magnetic field at P, measured counterclockwise from the +x axis. Answer: 126.4°...

Homework Statement In the circuit, C1 = 18.0 nF, C2 = 6.00 nF, C3 = 24.0 nF, C4 = 12.0 nF and C5 = 72.0 nF. The energy stored in C5 is 256. nJ. Calculate \epsilon. http://answerboard.cramster.com/answer-board/image/ea6f47d9fdca7dada7592281cfa85c4a.jpg Homework Equations q=cv...

Homework Statement Two point charges are arranged as shown on the x axis. q1 = +7.00 nC, and q2 = −5.00 nC. a = 25.0 cm. Calculate the position on the x axis, outside of the charges, where the electric potential is zero |...a...| O----------O q1.....q2(ignore the periods)The Attempt at a...

I got the answer, but I have a question. Why do we use 3.00cm^2 instead of m^2

I understand how pacopag derived the velocity equation, the thing is, I haven't slept in 20 hrs, so I'm exhausted, I'm going to bed now. Thanks for the help guys. I''ll email my prof to double check that answer.

I tried that but it doesn't give me the right answer...1.18 rad, I need 1.96 rad

damn...i can't seem to get it

correct...is that a problem?

I don't think that works... V=dx/dt = x(t)=0.15cos\phi x'(t)=-0.15sin\phi x'(t)=accel.=(xm)(w^2) =(0.15)(19.478) =56.9m/s^2 sin\phi=56.9/.15 ---> does not work Am I doing something wrong?

Homework Statement A block, attached to a spring, moves in Simple Harmonic Motion on a horizontal frictionless table. The displacement from equilibrium is given by x = xm cos (ω t + φ ) where x is positive to the right of the equilibrium position. The frequency of the motion is 3.10 Hz and...

haha yes, yes i can. I had a feeling there was another, easier method. Thanks for you help

first off, id like to thank you for your help, I am learning a lot. the only formulas i have for a dielectric material are: E = 1/2(qV) = 1/2(q0)(V0/k) = E0/k C=q/v = qk/V0 = kC0

Is this right Total charge on plate is q= E*E0A -- gauss' law Plates area is, of course, 3.00

so what is the charge density?

that formula is nowhere in our notes...hmm. I'm going to ask a buddy of mine for the solution, but if you don't mind could you post you method too. Surface charge density...is that a constant?