A system with a mass of 8 kg, initially moving horizontally with a velocity of 30m/s, experiences a constant horizontal deceleration of 3 m/s^2 due to the action of a resultant force. As a result, the system comes to rest. Determine the magnitude of the resultant force, in N, the amount of energy transfer by work, in kJ, and the total distance in m that the system travels.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?