Recent content by jamesbiomed

No problem. This website will become your best friend during Physics 1&2.

Hey Marc, I'm actually in the exact situation---BA in English, and going after an Engineering degree. I did exactly what everyone has been suggesting--I have taken Calc 1-3, physics 1&2, Chem 1&2, etc. I just wanted to caution you to heed some of the advice here and look into taking "intro to...

Hey echild. The problem was I wasn't squaring k, just plugging it in after the fact. K is less than one, so the frequency should be decreased. For anyone with same problem: w' is .1 % w. w'=k(1/LC)^1/2=> (w')^2=k^2/LC=>(w')^2=(.001)^2/(LC) so omega is the square root of that...

Homework Statement How much resistance must be added to a pure LC circuit (L = 340 mH, C = 2200 pF) to change the oscillator's frequency by 0.10 percent? Will the frequency be increased or decreased? Homework Equations I'm assuming critical damping: R^2=4L/C...

Homework Statement A long pair of insulated wires serves to conduct 29 A of dc current to and from an instrument. (a) If the wires are of negligible diameter but are 2.8 mm apart, what is the magnetic field 10 cm from their midpoint, in their plane (see figure)...

Redbelly, that's true, I added "1" to resitor's 1 and 3 and got the correct answer. Thanks!

Yes, that's exactly my model.

No rush on this, I'm in EST zone so this will be my last post for tonight... The third eq'n definitely makes sense, and there is an obvious node here to choose. Btw, I have currents running to the outside from each respective voltage source, then looping around through the middle... I went...

Alright, I've labeled some values points of reference, and am treating it basically like two closed loops to get equations: V=30I3-20I2=0 V=15I1-20I2=0 That's 2 eq'ns, three unknowns. I feel like combining R1 and R3 like you referenced earlier ^ might solve that. Am I in the right direction?

Appreciate the reply: Do mean "sneak" one ohm in because V=E1-rI=RI? Since r=1, to solve that you add one I to both sides...I don't think that's what you meant, so could you expand? This is a undergraduate Physics 2 course. Are KVL eq'n's Kirchhoff's rules? The rest that you named are not...

Homework Statement Assuming each battery has internal resistance r = 1.0 Ω, determine the magnitudes and directions of the currents through each resistor shown in the following figure. The batteries have emfs of 1 = 9.0 V and 2 = 12.0 V and the resistors have values of R1 = 15 Ω, R2 = 20 Ω...

I'll keep that in mind, it's just been one of those days...

Oh, ok. Thank you very much for the help

My mistake, H and N's signs are reversed. Would the net force between the two groups just be the sum of the forces on H and the sum of forces on N?

True. My mistake. H: F=k(.40)(-.2)e^2/(.18^2) +k(-.4)(-.2)e^2/.3^2 N: F=(k(-.40*.20)e^2)/.28^2 + k(.4)(.2)e^2/.4^2 Does that seem right? The mistake was not accounting for both charges?