Rank from greatest to least the amount of lift on the following airplane wings: (a) area 1000 m2 with atmospheric pressure difference of 2.1n/m2 , (b) area 800 m2 with atmospheric pressure difference of 2.3n/m2 , and (c) area 600 m2 with atmospheric pressure difference of 3.3n/m2 .

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.