« previous next »

Author Question: Being the ideal engine, the maximum COP of a Carnot cycle operated in reverse as a refrigerator is ... (Read 107 times)

strangeaffliction

  • Hero Member
  • *****
  • Posts: 660
on: Jul 27, 2018
Being the ideal engine, the maximum COP of a Carnot cycle operated in reverse as a refrigerator is
 
  A) (Th/Tc)(1  Tc/Th)-1.
  B) 100.
  C) (1  Tc/Th)-1.
  D) (Tc/Th)  (1  Tc/Th)-1.

Question 2

When two or more resistors are connected in parallel to a battery
 
  A) the voltage across each resistor is the same.
  B) the total current flowing from the battery equals the sum of the currents flowing through each resistor.
  C) the equivalent resistance of the combination is less than the resistance of any one of the resistors.
  D) all of the other choices are true.


Jane

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Evolutionary shift in plant life cycle stage dominance. Evolutionary shift in plant life cycle stage dominance.
Orientation of the Central Engine and Its Jets Orientation of the Central Engine and Its Jets
When the engine is cold, the coolant flows through the bypass. When the engine is cold, the coolant flows through the bypass.
A steady needle reading that rises 2 or 3 inches Hg when the engine speed is increased slightly ... A steady needle reading that rises 2 or 3 inches Hg when the engine speed is increased slightly ...
A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ... A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ...
Sketch the graph of the following functions using local maximum/minimums, interc Sketch the graph of the following functions using local maximum/minimums, interc
Video: Antidiuretic hormone (vasoconstriction, water reabsorption & sweat inhibition)

For a complete list of videos, visit our video library