Acylinder of hydrogen has a volume of 0.1m'. its pressure is found to be 20 atm at 20°c. what mass of hydrogen does it contain? if it was filled with oxygen instead to the same pressure, how much oxygen would it contain? (molar mass of h, = 2 kg/kmol, of o2 = 32 kg/kmol, 1 atm = 105 pa, r = 8.3143 kj/kmol-k).

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.

How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s

The quality is zero at a)-the saturated vapour state b)-the saturated liquid state c)-the saturated liquid-vapour mixture state d)-none of the states in the other answers