How can a single crash of a car into a wall involve three separate collections?

Drag each item into the proper state of matter category.

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.

Of is j/kg·k. if a 2.6 kg of isk to k, is ?