Recent content by Rose Garden

Homework Statement A loop moves with velocity v along a charged wire. (The charged wire passes through the center of the loop.) In a reference frame where the charged wire is stationary and the loop is moving with v, what is the E field and B field at a point on the loop? In a reference frame...

ok thanks guys

thanks guys I think I'm getting the picture now

Homework Statement There is a metal sphere charged to 6nC. A wire then connects this sphere to another sphere which has 2x the diameter and neutral. What are the final charges on each sphere? Homework Equations The Attempt at a Solution I think the idea behind this is that the...

I just want to know, what tan-1x means to you guys? does it mean arctan or cot? What about tan-2x? Isn't that cot2x? Shouldn't the notation tan-2x be banned to avoid misinterpreting it as an inverse trig function?

ok there's just so much I don't know: what makes light give off light?

A light source emits light in all directions, and the light travels at light speed, yet when we shut off this light source, all the light rays immediately disappear. I just thought about this and it just seems so strange. When we think of a sound source, we can shut off the sound source but the...

thanks, I have no problem integrating these, I'm just really amazed by how a change in some constant can lead to integrals of completely different forms, and yet still look very similar, is there any way to explain this?

Check this out, 1/(x2+a) where "a" is a constant When this function is integrated, if a is positive then we get something like arctan of something, if a is 0 we simply get -1/x, and if a is negative then we get something involving the natural logarithm, and yet there's something very similar...