1 If 83 cubic inches of O² gas at 56 psig is allowed to expand to 354 cubic inches w/o changing its temperature, what will be the final pressure of the O² gas expressed as a gauge pressure?

2. In a hydraulic system where the area of piston A1 is 2.1in.² &the area of A2is 13.8in.² ,how much force needs to be applied to A1to lift 74pounds at A2?

3. In a hydraulic system where the area of piston A1 is 2.6 in.²& the area of A2 is 11.6 in.², how far must A1be depressed to raise A2 2.7 inches?

4 A120cubic inchvolume of nitrogen gas is heated from43 F to65 F at constant pressure. What is the final volume?

5. In the hydraulic system pictured with a piston of area 6.5 in.²and a piston rod extending outside of the system with area 2.5 in.², what is the resultant force acting to force the piston to the right if the system pressure is 66 lbs. per in.²?

6 n a hydraulic system where the force applied to piston A1 is 25.3pounds & theweight being lifted at A2 is 90.4 pounds, how far will A2 be raisedif A1is depressed 23.5 inches?