Determine specific entropy change of refrigerant in process
Refrigerant 134a at a pressure of 0.8 MPA and a temperature of 50 C undergoes a process until the pressure is 0.1 MPA and the specific volume is 0.15 m^3/kg. Determine the specific entropy change of the refrigerant during the process.
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Determine the maximum theoretical speed that may be achieved over a distance of 360ft by a car of weight W starting from rest assuming there is no slipping.
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Compute the mean, median, and standard deviation for all of the chick weights. For each of the 6 feed types, compute the mean, median, and standard deviation for the weights of the chicks that received that specic feed supplement.
Refrigerant 134a at a pressure of 0.8 MPA and a temperature of 50 C undergoes a process until the pressure is 0.1 MPA and the specific volume is 0.15 m^3/kg.
An urn contains four red balls, seven black balls, and five green balls. If two balls are selected at random without replacement from the urn, what is the probability that a red ball and a black ball will be selected?
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The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard deviation of 600 hours. a. What is the probability that a laser fails before 500 hours?
What is a simple way to increase the performance and eliminate the problem from part d? Are there any side effects of this change?
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