Question $8($a$)$ The first law of thermodynamics can be written as AQ$=$ AU$+$ Aw$.$ State the practicmeaning of each term in the above equation.$($b$)$ A fixed mass of gas in a cylinder is heated in two stages:Stage $1$: At constant volume, when $5$ kJ of heat is supplied.Stage $2$: When it expands isothermally and does $4$ kJ df work. Apply the first lawthermodynamics to each of these processes and complete the table below to indicate, feach process, the values of AQ$.$ AW$,$ and AUStage $1$: Constant volumeStage $2$: Isothermal$+5$ kJAQAU$+4$ kJAW