At the beginning of the compression process of an air-standard Otto cycle, p₁ = 1 bar and T₁ = 300 K. The compression ratio is 8.5 and the heat addition per unit mass of air 1400 kJ/kg. Determine

(a) the net work, in kJ/kg, 

(b) the thermal efficiency of the cycle, 

(c) the mean effeective pressure in bar, 

(d) the maximum temperature of the cycle, in K.