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A pressure cooker maintains a constant pressure while food cooks in a water-steam mixture. If the pressure is higher than atmospheric, the water in the cooker boils at a higher temperature and makes cooking faster. Constant pressure is maintained at a small opening in the lid of the cooker with a “petcock.” As heat is added to the cooker and the pressure rises, the weight of the petcock allows just enough steam to escape to maintain constant pressure.
a.) What mass of petcock should be used to maintain a pressure of 100 kPa gage for a cross-sectional area of 4 mm2 at the opening? Atmospheric pressure is 100 kPa.
b.) Under these conditions what is the temperature of the water-steam mixture?
a gate shaped like .25 of a cylinder with radius r3m is used to control the flow of water through a canal.the height of
The head difference between manometer levels was 4.9 cm during the test, and the water temperature was 20 degrees celcius. If it took 152 second for 500 ml of water to discharge, determine the soil's coefficient of permeability.
A 10-year $2000 Bond with a coupon rate of 10% paid semi-annually is available for purchase. What is the maximum you would pay for this bond if your MARR (without inflation) is 6%, and you estimate an inflation rate of 3% annually
An intersection approach volume is 1,500 veh/h and includes 12% left turns with a through-vehicle equivalent of 2.3 tvu's/left turn. What is the total equivalent through volume on the approach
two 500 ml samples were completely mixed together the first sample contained 0.002 M Na2CO3 while the second contained 0.004 N NaOH. what volume of 0.02 N sulfuric acid would need to be added to neutralize the solution
A simply supported beam is to span 12 feet. It will support a uniformly distributed load of 800 pounds per linear foot over the full span and a concentrated load of 1000 pounds acting at 4 feet from the left support.
Draw a plan of a typical strip mine showing all operational features and equipment and why is the working slope of an open pit usually much flatter than the final slope?
you fill a 2-cubic foot wheelbarrow to the top with aggregate. if the specific gravity of the aggregate is 2.548 and 18% of the aggregate is void spaces, how much does the aggregate in the wheelbarrow weight?
At the site of a large scale land reclamation project 2 m of sand overlie a silty clay layer 5 m thick, which overlies highly fractured permeable rock.
Got a dam with a 22m damwall with a 200mm valve at the bottom. The waterlevel is 20m. If I connect a cone type of reducer to reduce the outlet to say 50mm and put the turbine somewhere on the line,
If a sample of wood measuring 1.45" x 3.45" x 6" long has a green weight of 8.55 lb. Determine the specific gravity of this wood.
How much extra water does a 175 - lb concrete canoe displacecompared to an ultra-lightweight 38 - lb Kevlar canoe of the samesize carrying the same load?
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