Abatch of parts is produced on a semi-automated production machine in a sequential batch production operation. batch quantity is 300 units. setup takes 55 min. a worker loads and unloads the machine each cycle, which takes 0.75 min. machine processing time is 3.46 min/cycle, and tool handling time is negligible. one part is produced each cycle. determine (a) average cycle time, (b) time to complete the batch, and (c) average production rate.

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Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.