Aten-centimeter radius thorium sphere with a thermal conductivity of 55 w/mk experiences a uniform heat generation rate of 1x106 w/m. the sphere is surrounded by air at 20°c with a film coefficient of 500 w/m-k. determine the total heat transfer from the sphere to the air and the temperatures at the following locations: (1) the sphere center; (2) at a radius of 5 cm; and (3) at the sphere surface.

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

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.

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.