Chapter 9, Problem 12QP

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Using one dimensional heat conduction equation, compute the through-thickness temperature distribution in a 4 mm thick plate for polyester at various times during cooling from the molten state in contact with a cold metal tool at 20°C. Graph your results. i need 10 upvotes.

Meena Chavan Corp.’s computer chip production process yields DRAM chips with an average life of 1,800hours and s = 100 hours. The tolerance upper and lowerspecification limits are 2,400 hours and 1,600 hours, respectively. Is this process capable of producing DRAM chips tospecification?

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The process capability index (Cp) may mislead if: (I)  the process is not stable. (II)  the process output is not normally distributed. (III) the process is not centered.

Consider a piston-cylinder assembly that operates in isobaric process. Steam undergoes the process from 500°C to reach 1000°C. Select two (2) pressure values in the range of 10

Design a cantilever beam with a tip mass such that the natural frequency equals 10 Hz. Take the beam’s mass into consideration. Hint: find the equivalent mass and equivalent stiffness

West Battery Corp. has recently been receiving complaints from retailers that its 9-volt batteries are not lasting as long as other name brands. James West, head of the TQM program at West's Austin plant, believes there is no problem because his batteries have had an average life of 60 hours, about 10% longer than competitors' models. To raise the lifetime above this level would require a new level of technology not available to West. Nevertheless, he is concerned enough to set up hourly assembly line checks. Previously, after ensuring that the process was running properly, West took samples of 5 9-volt batteries for 25 test to establish the standards for control chart limits. Those 25 tests are shown in the following table: Sample Data Sample Data Hour Hour Sample Taken 1 Sample Taken 1 2 4 5 R 2 3 4 R 1 60 61 60 59 67 61.4 8 14 62 69 51 62 56 60.0 18 55 57 70 56 46 56.8 24 15 67 53 63 69 70 64.4 17 60 45 58 49 57 53.8 15 16 72 58 51 44 64 57.8 28 66 81 61 51 60 63.8 30 17 49 49 58 68…

Pressurized steam at 4 4 0 K flows through a long, thin-walled pipe of 0.64 m diameter. The pipe is enclosed in a concrete casing that is of square cross section and 1.45m on a side. The axis of the pipe is centered in the casing, and the outer surfaces of the casing are maintained at 340 K . What is the rate of heat loss per unit length of pipe?