A) a cross-section of a solid circular rod is subject to a torque of t = 3.5 knâ‹…m. if the diameter of the rod is d = 5 cm, what is the maximum shear stress? include units. b) the maximum stress in a section of a circular tube subject to a torque is tmax = 37 mpa . if the inner diameter is di = 4.5 cm and the outer diameter is do = 6.5 cm , what is the torque on the section? include units.

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.