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Can I get someone with a brain to assist me here.

Field lines around a magnet travel from North to South on the outside and from South to North on the inside. What exactly is there to work out? You make very little sense.

Sigh, http://img9.imageshack.us/img9/9973/explanationgx.jpg You getting it yet?

I don't understand what you are trying to prove. I could draw another diagram showing how reversing the magnet will cause the X side to move up using my exact same principles. But I'd rather not, because you have just shown me you don't know jack.

So it is 760. I hope I wrote that and I'm remembering 726 for some weird reason.

Can someone post up the Q?

Or we could say that because there isn't another magnet that the field lines curve around head towards the south pole. And as shown in my diagram this constituents addition of field lines above and cancellation below, meaning it moves down, and the mass must be hung on Y.

a) ~726 light years b) ~726 years

Is that a typo or do you agree with my logic yet disagree with my result? ^.^

16 was the satellite orbiting the meteor.

http://img8.imageshack.us/img8/4543/pivotq.jpg MSPaint ftw.

My god. It is Y. I'll draw up a diagram after this game of HoN. At least I now know about 5% of the state got that one right, should help me push my rank up.

Tbh if 5 is B I think that's a pretty poorly worded question. It didn't ask how the gravitational pull differed in relation to what. I took the question as meaning whether or not the positioning on the Earth between the Sun and the Moon would have a direct effect on Suns pull on the moon. Ofc it...

haha yeah. i also do engo studs and seeing that I laughed a bit in my head

Or this guy could just explain it perfectly. Also with the B field: Since the torque is only provided by side X (as it is the only side inside the field) you can use T=Fd. F=BIL. so T=BILd. B=T/ILd. Which was 0.98. Alternatively you can say that force of side X pushing down must equal that...

Someone post up the question and I will show you why it is Side Y. And why 0.098T is the correct B.

Also you place the mass on side Y. 100% positive.

All of your calculations look the same as mine. Except for your one where the coil was on the pivot. I found B to be 0.098T or something.

I'm 110% sure its B. Yes it is proportional to sintheta but theta is always 90 degrees to the magnetic field. The FORCE on AB is always constant but swaps every half turn. The torque however is not constant. Therefore B.

F=BIL or T=BIA/2 both gave me the same answer.