Recent content by mickry

Homework Statement I have the field at the center of a charged ring on the x,y axes (top half has charge density of -lambda, bottom is +lambda lambda=la) to be E=(lay^)/(2pi epsR) (eps=epsilon) i can't find the potential for this, R=radius, Can anyone help? Homework Equations...

forgot to mention its a loop of chain

I need to find the tension of a spinning chain with mass per unit length u and angular speed w. I need to show that em waves on the chain travel at the same speed as the chains linear speed. please help if you can,

tripple scaler product?

can anyone help me with this question: A sphere of unit radius is centered at the origin. points U,V & W on the surface of the sphere have vectors u,v & w. find the position vector of points P&Q on a diameter perp to the plane containing points U,V & W? can anyone help