Recent content by mattysimins

I have to show that the capacitance per unit length for two identical wires of radius d separated (at the center) a distance D as: C/l = (pi epsilon0) / ( ln [( D - d ) / d] And I'm clueless. How do I go about solving this? I started by trying with C = q / V to C = lambda * l / V .. but I...

Nah, i should have typed it neater. "After many bounces the ball stops (just a statement). The displacement is -h, but over the ball traveled a considerably larger distance. What was that distance?"

wow i must have been tired last night. Wnc=-Ei (had that) -fd=-mgh (had that) d=mgh/f ... is that it? if it is I'm going to kick myself.

In this problem a mass m is dropped from a height h onto a flat surface. when it bounces it has the same speed before the collision. There is a constant force of air resistance f acting on the mass as it goes through this motion. (answer in terms of f, m, h, v, and g. ) the first asks how...