4 Consider a device with one inlet and one exit if the volume flow rates at the inlet and at the exit are the same is the flow through the device necessarily steady? Why? 5. A2 m rigid tank contains nitrogen gas at 500kPa and 300k now heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 800kPa. The work done during this process is (A)600k(B)1000k](C)0k (D)500kJ(E)1600k4. Consider a device with one inlet and one exit. If the volume flow rates at the inlet and at the exit are the same, is the flow through the device necessarily steady？ Why? 5. A 2 m3 rigid tank contains nitrogen gas at 500kPa and 300K. Now heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 800kPa. The work done during this process is (A) 600 kJ (B) 1000 kJ (C) 0 kJ (D) 500 kJ (E) 1600 kJ