A large tank contains 50 gallons of water in which 10 lbs of salt is dissolved. Water containing 2 lbs of salt per gallon flows into the tank at the rate of 5gal/min .The mixture is kept well-stirred and flows out of the tank at the rate of 3gal/min Find: a) The amount of salt in the tank after 60 minutes. b) The amount of water in the tank after 60 minutes.

Output from a process contains 0.02 defective unit. Defective units that go undetected into final assemblies cost $25 each to replace. An inspection process, which would detect and remove all defectives, can be established to test these units. However, the inspector, who can test 20 units per hour, is paid $8 per hour, including fringe benefits. Should an inspection station be established to test all units?   Assume that the line will operate at the same rate (i.e., the current production rate) regardless of whether or not the inspection operation is added. a-1. Without the inspector, what is the current hourly cost of defects?   a-2. Should an inspection station be established to test all units based on costs alone? multiple choice Yes No a-3. If the inspection operation is added, what would be the cost to inspect each unit? Note: Round your answer to 2 decimal places.   b. What would be the benefit (or loss) from establishing the inspection process? Note: Round your answer…

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 the mixing process shown in the figure. A mixing chamber initially contains 4 liters of a clear liquid. Clear liquid flows into the chamber at a rate of 10 liters per minute. A dye solution having a concentration of 0.25 kilograms per liter is injected into the mixing chamber at a constant rate of  liters per minute. When the mixing process is started, the well-stirred mixture is pumped from the chamber at a rate of 10 + r liters per minute. (a) Develop a mathematical model for the mixing process. Let Q represent the amount of dye in kilograms in the mixture. (dQ/dt)=? (b) The objective is to obtain a dye concentration in the outflow mixture of 0.1 kilograms per liter. What injection rate r is required to achieve this equilibrium solution? r = ? Would this equilibrium value of r be different if the fluid in the chamber at time t=0 contained some dye? yes, no  or maybe? (c) Assume the mixing chamber contains 4 liters of clear liquid at time t. How many minutes will it take…

While analyzing their annual sales data (liters of wine sold per year) for the past 30 years, a vineyard found that after taking four successive differences, the resulting data had a mean of 2458 liters and looked like a stationary process (e.g. white noise). If the actual data for the past four years were 2018 - 2134 liters, 2017 - 2403 liters, 2016 - 2076 liters, and 2015 - 2290 liters. What would be a reasonable forecast for sales in 2019? Explain.

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?

A well designed experiment is one in which more than one variable is adjusted at the same time (True or False)? O True O False

You are the Green Belt Industrial Engineer in charge of manufacturing process for batteries that have an average voltage output of 12 volts, with production assumed to be normally distributed. You have decided that if a sample of 21 batteries taken from production has a sample average of 11 and sample standard deviation of 1.23, then the production is declared out of control and the line is stopped What is the confidence that your decision is a proper one to take?

i need help with calculating rate of diffusion for 3 crystals and 6 crystals Diffusion Diffusion Diffusion Spot Spot Time Spot Diameter 1 Diameter 3 Diameter 6 (min) Crystal Crystals Crystals (mm) (mm) (mm) 10 15 0-15 0-15 20 16 0-16 0-16 30 18 0-18 0-18 Time Rate of Diffusion for Rate of Diffusion for 3 Crystals Rate of Diffusion for 6 Crystals (min) 1 Crystal (mm/hr) 0-10 90 0-20 48 0-30 36 (mm/hr) (mm/hr) Rate [mm/h] = (diameter [mm] / time [min]) x 60 [min] X

A nozzle is said to be a convergent nozzle_______ a)when the cross-section of the nozzle increases continuously from entrance to exit b)when the cross-section of the nozzle decreases continuously from entrance to exit c)when the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit d)none of the above Don't use chatgpt or other ai tool. If you know correct answer then attempt if you gave wrong answer I will give 10 dislikes and more from my friends account