Unit 2 physical science
jason's mom got a new fridge and a new dishwasher for their kitchen.
the store delivered both appliances to the kitchen, but jason asked a
couple of friends to him slide the appliances into place.
6. which appliance is going to take more pushing (force) to slide it
into place?
7. why?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.