Author Question: A engine manufacturer makes the claim that the engine they have developed will, on each cycle, take ... (Read 45 times)

APUS57

  • Hero Member
  • *****
  • Posts: 571
A engine manufacturer makes the claim that the engine they have developed will, on each cycle, take 100 J of heat out of boiling water at 100C, do mechanical work of 80 J, and exhaust 20 J of heat at 10C.
 
  What, if anything, is wrong with this claim? A)
 
  The heat exhausted must always be greater than the work done according to the second law of thermodynamics.
  B)
 
  This engine violates the first law of thermodynamics because 100 J + 20 J  80 J
  C)
 
  An engine would operate by taking in heat at the lower temperature and exhausting heat at the higher temperature.
  D)
 
  The efficiency of this engine is greater than the ideal Carnot cycle efficiency.
  E)
 
  There is nothing wrong with this claim because 100 J = 20 J + 80 J.

Question 2

A neutral atom has an electron configuration of 1s22s22p6. If a neutral atom holds one additional electron, what is the ground state configuration?
 
  A)
 
  1s22s22p63s1
  B)
 
  1s22s22p7
  C)
 
  1s22s32p6
  D)
 
  1s32s32p6
  E)
 
  none of the given answers



xMRAZ

  • Sr. Member
  • ****
  • Posts: 363
Answer to Question 1

D

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

For a complete list of videos, visit our video library