A gas expands from I to F in the figure. The energy added to the gas by heat is 439 J when the gas goes from I to F along the diagonal path. What is the change in internal energy of the gas?
Answer in units of J

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

You can decrease the resistance of a length of wire by

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.