A long copper rod of diameter 2.0 cm is initially at a uniform temperature of 100C. It is now exposed to an air stream of 20C with a heat transfer coefficient of 200 W/m^2. How long would it take for the copper rod to cool to an average temperature of 25C

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

On a average work day more than work place firs are reorted

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.