The relationship between the pressure P and volume V of theair ina cylinder during the upstroke of a piston in an aircompressor can be expressed as PVk=Cwhere k and C are constants. Duriny a compression test, thefollowing data was taken:P(mmHg) 760 1140 1520 2280 3040 3800V(cm3) 48.3 37.4 31.3 24.1 20.0 17.4Dtermine the values of k and C that best fit the data. numerical values and units

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.