The diagram below shows a hydraulic lift. Piston A has a contact area of 3.3 cm' and B an area of 0.66 m. A force of 20 N acts on plston A.
B W12
2
Convert the area of piston Ainto ma​

The two required components for a generator

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good