An inventor claims to have devised a cyclical engine for use in space vehicles that operates with a nuclearfuel-generated energy source whose temperature is 910 r and a sink at 480 r that radiates waste heat to deep space. he also claims that this engine produces 4.3 hp while rejecting heat at a rate of 14,500 btu/h. is this claim valid

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.