The crankcase of an automobile is approximately 30in. long, 12 in. wide, and 4 in deep. assuming that the surface temperature of the crankcase is 160 °f, estimate the rate of heat flow from the crankcase to atmospheric air at 40 °f at a road peed of 60 mph. neglect radiation and use for the front and rear surfaces the same average convective heat transfer coefficient as for the bottom and sides.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?