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Galvanized steel sheet metal is fastened together with copper rivets. The galvanized steel sheet has an area of 1.2 ft2 and the rivets have a total exposed area of 2 in.2. The environment contains moisture and some salt.
(a) Which metal will corrode?
(b) If half as many rivets are used, what effect would this have on the total rate of corrosion?
(c) How could corrosion be reduced?
the mass of dry air, in kg, if the mass of water vapor is 10 kg.
a ball is shot vertically into the air 50 m/s 108m from the ground. 6 seconds later, another ball is shot vertically into the air 20 m/s 58m from the ground. Find the distance where they meet in the air from the ground.
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a friction less piston-cylinder device initially contains 50 l of saturated liquid refrigerant-134a. the piston is free
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What are the advantages and disadvantages of welding compared to other types of assembly operations?
You must design a device that will remove the balls from the bucket, and deposit them into the box. You will have 60 seconds to remove balls.
A 0,5Kg mass attached linear spring suffress 01 N/m. Determine be naturak frequency of the system in hortz e reapert this calculation for a mass of 50Kg and a suffress of 10N/m and compare your result to that of part.
a garden hoses with an inside diameter of 58 inch is supplying water at a rate of 3 gallons per minute 1 ft3 7.481
A lever AB of negligible weight is loosely fitted onto a 2.5-in.-diameter fixed shaft. Knowing that the coefficient of static friction between the fixed shaft and the lever is 0.15, determine the force P required to start the lever rotating counte..
A two shell pass and four tube pass heat exchanger is used to heat glycerine from 20 °C to 55 °C by hot water that enters a thin-walled 22 mm diameter tube at 85 °C and leaves at 42 °C. The total length of the tube in the heat exchanger is 40 m.
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