You have to decide between two projects. project a has an initial cost of $5,000 and a useful life of 5 years, at which time it can be replace for $5,000. it has a net annual benefit of $2,500. project b has an initial cost of $9,000, a useful life of 10 years, and a net annual benefit of $3,300. which project should you select if you compare costs over a 10-year period? why would you select this project? assume marr = 30%.

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.