Recent content by gd

nevermind... no

i would think so..

Hopefully If R was less than a, would it be B=mu*n*I ?

so B=muI/2piR right?

Would that 2\pi be from integrating over dphi?

I am acutally lol he was going on about not forgetting about the angle in friday's class, i kinda just shrugged it off until i saw this amperian loop haha i was too lazy to make it curvey... i suppose i could have just scanned the original picture. I'm just going to make that assumption...

hahaha okay that's what i thought, just had to double check. One more question... how do I account for the angle that the wire is on?

So is that loop in the xy plane? or the yz plane? (and i wouldn't worry about the drawing, considering 3/4 of it's crappiness is mine lol)

Could you perhaps be able to give me a visualization of the loop enclosing the entire solenoid?

If the collision is completely inelastic then you don't need to worry about the energy. setup the conservation of momentum equation like this: m1v1 + m2v2 = (m1 + m2) v3 (m1 + m2) because they are stuck together post collision. you have m1, m2, v1 and v2 so just solve for v3.

I think what's confusing me is the part of the question referring to the circle of radius R>a on the xy-plane in the counter-clockwise direction... is the prof just giving me too much information? I found an example in my book after I posted this. I went through it and it still seemed...

If I'm not mistaken, then the momentum in the y direction is going to be equal before and after the collision, so you can set up an equation like M*vcar = 2M*28sin38 2M on the right side because the vehicles are the same mass... the M's cancel and you can solve for vcar.

Howdy I'm having a ton of trouble with this question Basically I have a spiral coil running around the z-axis with radius 'a' height '2b' and pitch 'c'. The point (x,y,z) = (a,0,0) is on the spiral and n = 2b/c (that's the number of turns on the spiral). There's a steady current running...