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Repeat Sample Problem 9.2, except use a pin made of wrought-aluminum alloy 2011-T3 having a 95 Brinell hardness.
Problem 9.2
Aluminum plates are fastened together with brass rivets. The aluminum plates have a total exposed area of 1.5 ft.2 and the rivets have a total exposed area of 2.5 in.2. The environment involves moisture and some salt.
(a) Which metal will corrode?
(b) If twice as many rivets are used, what effect would this have on the total rate of corrosion?
Population growth in Ethiopia. In 2008, the estimated population in Ethiopia was 83 million people with a relative growth rate of 3.2%.
a flat-bottomed barge 25 m long and 10 m wide submerged to a depth of 1.5 m is to be pushed up a river at a rate of 8.6
why we need to avoid processes excessively large or excessively small thermodynamic driving forcesdifferences in
The compression ratio of a cold air-standard Diesel cycle is 15. The state of the air at the beginning of the compression stroke is 15 °C, 100 kPa. The heat transfer in the combustion process is 1800 kJ/kg. Determine the following:
pump a can empty a tank in four hours while pump b takes only three hours to empty the tank. how long will it take to
You have agreed to produce a short report for Dev to help him to prepare for the meeting. Read the case study carefully and write the report, which should be no longer than 800 words, pointing out the various legal issues (in contract and liabilit..
In an effort to reduce the mass of an aluminium bulkhead for a spacecraft, a machinist drills an array of holes in the bulkhead. The bulkhead is a triangular-shaped plate with a base and height of 2.5 m and 1.6 m, respectively, and a thickness of 7 m..
starting from rest the motorboat travels around the circular pathp 50m at a speed v0.8tms where t is in seconds.
The control microcontroller needs 10μs to read a data sample from one channel. Assuming 3 byte instructions on the average, the average instruction cycle time (fetch and execute) is known to be 6μs. Estimate the program size (number of instruction..
the temperature of 5 lbs of air is raised from 200 f to 500 f at constant pressure with an electrical coil. how much
(MATLAB) given a cannon ball that is shot upwards at an angle, the time taken for the cannon ball to hit the ground is: Write a single function that outputs the total time of flight, range of projectile and velocity on impact given inputs. Use the fu..
during the course of a motor test the motor rpm is measured and recorded at regular intervals as990 1030 950 1050 1000
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