Engineering, 30.08.2019 05:30 Kataklusmos
Indicate whether the following statements are true or false for a reversible isothermal process: (a) q=t(∆s). (b) ∆u=0.(c) the entropy change of the system is always zero.(d) the total entropy change of the system and the surroundings is zero.(e) q=w.(f) the entropy change of the environment is negative.(g) the total entropy change of the system and the surroundings is negative.
Answers: 1
Engineering, 04.07.2019 18:10
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
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Engineering, 04.07.2019 19:10
What is the main objective of using reheat rankine cycle?
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Engineering, 04.07.2019 19:10
10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.
Answers: 2
Engineering, 04.07.2019 19:10
A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b.s. and b.s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.
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Indicate whether the following statements are true or false for a reversible isothermal process: (a)...
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