He barometer of a mountain hiker reads 750 mbars at the beginning of a hiking trip and 650 mbars at the end. neglecting the effect of altitude on local gravitational acceleration, determine the vertical distance climbed. assume an average air density of 1.20 kg/m3.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

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