This topic contains a solution. Click here to go to the answer

Author Question: Which answer below is not a statement of the second law of thermodynamics? a. Real processes ... (Read 60 times)

rl

  • Hero Member
  • *****
  • Posts: 579
Which answer below is not a statement of the second law of thermodynamics?
 a. Real processes proceed in a preferred direction.
  b. Energy does not flow spontaneously by heat from a cold to a hot reservoir.
  c. The entropy of the universe increases in all natural processes.
  d. In theory, heat engines working in a cycle employ reversible processes.
  e. You cannot construct a heat engine, operating in a cycle that does nothing but take heat from a reservoir and perform an equal amount of work.

Question 2

An engine is designed to obtain energy from the temperature gradient of the ocean. What is the thermodynamic efficiency of such an engine if the temperature of the surface of the water is 59F (15C) and the temperature well below the surface is 41F (5C)?
 a. 3.5
  b. 67
  c. 31
  d. 17
  e. 96



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Joc

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

D

Answer to Question 2

A




rl

  • Member
  • Posts: 579
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review


mochi09

  • Member
  • Posts: 335
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

For a complete list of videos, visit our video library