Recent content by kivarocket

This must involve a substitution that I'm not catching. The knowns are: heat capacity (c), heat (Q), mass (m), distance (x), initial temp (Ti) and looking for Tf. If I have PΔV = mgh, do I need to sub in mcΔT somehow to incorporate c, Q and ΔT? Would anyone be able to show me the work on how...

Work = a change in energy. I'm not sure how to integrate that into the problem. I've gone over this problem for hours trying to figure out what I'm missing. I could use W = PV, but I don't have enough info. I was trying to use the delta E equation but I'm lost on the steps.

This problem doesn't require calculus, so I don't need to take the integral. However, if I use the equation provided to solve for F, I get -8 N. Since W = F*d (where d = distance traveled), then -8N * 2m = -16 Nm. The correct answer is supposedly -12 Nm, so I'm not sure what I could be missing...

Please help -- An ideal gas problem involving work on a mass 1. An ideal gas has a heat capacity of 20 J/(mol*K). One mole of the gas is in a cylinder and absorbs 1000 J of heat and lifts a 10 kg mass a vertical distance of 2 m while expanding. If the initial temperature of the gas is 300 K...

Can anyone help me solve this problem? It seemed straightforward at first, but I am not getting the correct answer of -12 Nm. Thank you! A nonlinear spring is modeled by a force law given by F(x) = -10x + 3x^2, where F is measured in Newtons and x in meters. How much work is done stretching the...