Hello,
I'm using Halliday and Resnick's Fundamentals of Physics, 10thedition. It has some equations in it that seem to contradict eachother. I know the problem is with me though, not the equations.Electric potential energy is given as U=VQ (equation 24-3), where Qis charge and V is voltage. We also have the equation, Q=CV(equation 25-1), where C is capacitance. So, it looks like we couldsay U=CV^2 (substituting CV from 25-1 for Q in 24-3). I know thatwe cannot, since U=1/2CV^2 (equation 25-22), but I don't see wherethe problem in my reasoning is.... any help would be appreciated!(Barney style please!)  Thanks!
Darrell