A2.5" diameter steel bar is 8-ft long. the diameter is reduced to 1" in the 2-foot central portion of the bar. when an axial load is applied to the end of the bar, the axial strain in the central portion of the bar is 760 μin./in., and the total elongation of the bar is 0.03132 in determine: (1) the elongation of the central portion of the bar (2) the axial strain in the end portions of the bar. note: 1μ=1 x 10^-6

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

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

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.