Recent content by bbhill

Given the cone, z^2=x^2+y^2 z<= 1 filled with water, find the work needed to flip the cone upside down. W = Fd Well, I figured I could integrate the force along the distance (0,1) by multiplying the distance from 0 times the cross section circle area times the density. That would...

Thanks, I corrected those mistakes. I ended up getting q/m=gR^{3}/kQz=gR^{2}/kQ since the force of the ring is at a local maximum when R = z. I've been staring at this for a while and I still have no clue about how even to go about the second part though. I believe that the angular...

1) Consider negatively charged -Q ring with radius R and a particle with charge +q and mass m. Particle is confined to movement along the axis that bisects the ring which also points along the force of gravity. Taking into account the force of gravity, a) What condition must q/m meet so that...

Yeah, these are the same things I told my professor, but he stood firm on his answer. I guess I'll let it slide for now and if my grade is affected at the end of the semester I'll look back into it. Thanks

Q: 20 J of heat energy is added to an ideal gas while -40J of work is done BY the same gas. The total change in internal thermal energy of the system is what? Equations I used: \DeltaEth = Heat + Work \DeltaEth = Heat - Ws This was a problem on a recent physics test I took and I said...

1. A 3 kg mass hits a stationary mass of 9 kg and sticks. What is the change in entropy? So, I figure that I will need to \DeltaS = \DeltaQ/T. However, I don't know the heat or the temperature of this reaction, so this couldn't possibly be the way to evaluate. So, I think I could...