Recent content by darrenhb

Thanks! I'll give that a go later, haha.

What I figured was that it would be F = -k1x - k2x, and therefore k = k1 + k2. Is this correct? I always over-think these things!

Hey. Suppose a mass is attached to two springs, one on each side, and they have different values for k. If you wanted to measure the frequency, how would you add up the k values? Would it work as if they were in series, so 1/k = 1/k1 + 1/k2, or would it just be k = k1 + k2 like in parallel...

The question unfortunately doesn't give much of a hint as to how fast this might be traveling, so I'm not sure I could cancel out the v2. I also can't see where I typed d\dot{x}/dx = 0. :S

Homework Statement Fnet = Ffriction + Fairresistance = μmg + cv2 = ma Essentially I just need to get this in a v(x) form. Prof said that we need to go about it by doing this: F = m\ddot{x} = m \dot{x} * d\dot{x}/dx and then integrating to get v(x) The Attempt at a Solution...

Thanks! That equation was the missing link I think, I figured it out. :)

Homework Statement Pretty straight forward, I just have to show why a photon can't transfer all of its energy to an electron. I understand this in theory but I'm stuck at how to show it. Homework Equations 1) Ep + mec2 = Ep' + Ee Where Ep is the energy of the photon, Ep' is the energy of...