Find temperature as leaves valve-no change in kinetic energy
Saturated vapor at 400 Kia flowing in a line is taken out through a valve to 100 kpa. What is the temperature (in C) as it leaves the valve assuming no changes in kinetic energy and no heat transfer?
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Scores on a certain test are normally distributed and a researcher wishes to estimate the mean score achieved by all students on the test. He was told that he would need a sample size of 100 to assure a 95 percent confidence interval with width=4.
Hydraulic engineers in the United States often use, as a units of volume of water, the acre-foot, defined as the volume of water that will cover 1 acre (where 1 acre = 43560 ft2) of land to a depth of 1 ft. A severe thunderstorm dumped 2.6 in. of
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King Arthur's knights fire a cannon from the top of the castle wall. The cannonball is fired at a speed of 52 m/s and at an angle of 34°. A second cannonball that was accidentally dropped hits the moat below in 1.0 s. (a) How tall is the top o
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In water, without the enzyme, the reaction proceeds with a rate constant of 0.039s^-1 at 26C. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 1.0 x 10^6 s^-1 at 26C.
The average daily usage is 10,000gal. If water is added to the tank at an average rate of 5000[exp(-t/20days)] gallons per day, where t is time in days, for how many days will the tank contain water?
In a Mossbauer effect experiment, the change in frequency of a 3.5 x 10^18 Hz electromagnetic wave can be detected if the source and absorber have a relative speed of 0.03 mm/s with respect to each other. Calculate the frequency shift v-vo for mot
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A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
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For a research topic on evaluating the access to health services for commercial sex workers as a mixed method approach provide the methodology
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