An electric train moving at 20 kmh–¹ accelerate to a speed 30 kmh-¹ in 20 s. find the distance travelled in meters during the period of acceleration.​

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.