Recent content by VictorWutang

I think I'm familiar enough that i'll understand whatever you explain using them.EDIT* sorry, I realized that was a little vague. Yes, I understand basic use of complex numbers but have not taken a college level class on them yet.

Oh I see... in that case I know for RL and RC circuits in series ZL = √ R2 + ω2L2 and ZC = √ R2 + 1 / (ω2C2) but I don't understand how I would use this for RLC in parallel. Help?

Homework Statement Write the current I(ω) for the RLC circuit above Homework Equations I = V/Z The Attempt at a Solution I believe Z should be Z = ( 1/R + 1/XL + 1/XC)-1 which would give Z = ( 1/R + 1/(ωL) + ωC )-1 and I is simply emf / Z but I don't think you can...

so inside the integral is Edr = kq1q2/ r2dr which, when integrated, is -kq1q2/r And since ΔV = - ∫Edr so the value i get turns positive, which seems like it would be correct. Then i would just plug in the numbers. is this right?

yes, it does.

so electrical field is E = .5kσ/r and electrical force is F = qE so Tsinθ = F = qE = .5qkσ/r, also Tcosθ= mg giving us T = mg/cosθ so mgtanθ = .5qkσ/r so θ = tan-1 (.5qkσ/rmg) but r in this case is the distance not the radius, and we want to put θ in terms of q being variable so how can...

yes, that's what the diagram looks like. and θ is the angle I'm looking for, the angle between the wall and the rope

So is the x component of tension is sinθ * Ftension? and then Ftension is mass * gravity?

Homework Statement A small positively charged sphere of mass m is attached to a very large positively charged vertical plate by a string and hangs due to gravity. The charge density on the plate, σ, is uniform. a) Calculate the equilibrium position of the ball as a function of the (uniformly...

I do not have a attachment for it, but i think i described it well enough. Maybe this will help, tried to type it it best as possible. Ignore the asterisks, I just had to put them in there for spacing. The other lines are the wires. |-----A-----------------| | ******* | ********| emf **** B...

Homework Statement There are Cl+ ions at the corners of a cube of side a = .4nm and a Cs- ion at the center. a) What is the net force on the Cs- ion? b) What is the electric field at the center of the cube cause by all of the Cl ions? c) What is the electric potential at that point...

[b]1. In the circuit shown below, describe what happens to the brightness of bulbs A and B when the switch is closed. Explain your reasoning. (no other information is given, just asking about the relative brightness of each bulb)  In the circuit, with the switch open, you have a loop with a...