He following data on baker’s yeast in a particular medium at 23.4°c were obtained in the presence and in the absence of an inhibitor, sulfanilamide. the reaction rate (–rs) was measured in terms of the oxygen uptake rate (ro2), obtained as a function of oxygen partial pressure. assume the rate ro2, follows michaelis-menten kinetics with respect to oxygen. calculate the ro2 maximum (i. e., vmax), and the michaelis-menten constant km.

Fluids at rest possess no flow energy. a)- true b)- false

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

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.