What is the coefficient of drag for a flow of air (rho = 1.225 kg/m^3), mu = 1.8 times 10^-5 ns/m^2) over a flat plate that is 93-cm long, if v_infinity = 86 m/s? select one: a. 3.38e-3 b. 8.27e-3 c. 5.70e-3 d. 2.19e-3

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.