Mathematics, 07.08.2019 04:30 Maggy1908
Apiston-cylinder device initially contains 0.15-kg steam at 3.5mpa, superheated by 5 degrees c. now the steam loses heat tothe surroundings and the piston moves down, hitting a set of stopsat which point the cylinder contains saturated liquid water. the cooling continues until the cylinder contains water at 200degree c. determine (a) the final pressure and the quality(if mixture), (b) boundary work, (c) the mount of heat transferwhen the piston first stops, (d) and the total heat transfer.
Answers: 3
Mathematics, 21.06.2019 21:00
Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.
Answers: 1
Mathematics, 22.06.2019 00:00
At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?
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Mathematics, 22.06.2019 01:10
If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.
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Mathematics, 22.06.2019 03:30
Find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified line. y = x â’ 1 , y = 0, x = 5; about the x-axis v = sketch the region. sketch the solid, and a typical disk or washer.
Answers: 1
Apiston-cylinder device initially contains 0.15-kg steam at 3.5mpa, superheated by 5 degrees c. now...
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