In an isothermal system, a chamber is filled with gas and a piston rests atop the chamber. The initial internal energy of the system is 3,500 J. When heat is added
to the gas, the piston rises. If 2,000 J of heat is added to the system, how much
work will the gas do on the piston? (Assume this is an ideal system in which
energy transfer is 100% efficient.)

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?