Answer:
The correct answer is 0.004382 kW/K, the second law is a=satisfied and established because it is a positive value.
Explanation:
Solution
From the question given we recall that,
The transferred heat rate is = 2kW
A reservoir cold at = 300K
The next step is to find the rate at which the entropy of the two reservoirs changes is kW/K
Given that:
Δs = Q/T This is the entropy formula,
Thus
Δs₁ = 2/ 300 = 0.006667 kW/K
Δs₂ = 2 / 875 =0.002285
Therefore,
Δs = 0.006667 - 0.002285
= 0.004382 kW/K
Yes, the second law is satisfied, because it is seen as positive.
Answer:
Recall the Entropy Balance (Second Law of Thermodynamics) equations for the system below
And for ideal gas, we know that
Change in Entropy of the air kJ/Kg.K, ΔS = S₁ - S
₂ = Cp Ln (T₂/T₁) - R Ln(P₂/P₁)
where R is gas constant =0.287kJ/kg.K and given
Cp=1.015 kJ/ kg.K
T₂ = 465k T₁=270k, P1=58kPa, P2=350kPa
substituting these values into the eqn above, we have
S = (1.015x 0.544) - (0.287x1.798)
S = 0.0363kJ/Kg.K
Hence, the mass specific entropy change associated with the compression process = 0.0363kJ/Kg.K
The answer is memory i believe
It is uncommon for electrocution to cause crane incidents: False.
<h3>What is
electrocution?</h3>
Electrocution can be defined as a process through which a certain amount of electric current (electricity) passes through the body of a living organism, thereby, leading to death or severe injury.
According to the occupational safety and health administration (OSHA), it is very common for electrocution to cause crane incidents and accidents when adequate safety precautions are not adopted.
Read more on OSHA here: brainly.com/question/17199752
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Answer:
Mechanic: a person who <u>repairs and maintains machinery</u>
Mechanical engineers: design <u>power-producing machines</u>
Explanation:
