« previous next »

Author Question: Being the ideal engine, the maximum COP of a Carnot cycle operated in reverse as a refrigerator is ... (Read 42 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?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

The average adult has about 21 square feet of skin.

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.

Diagram of the life cycle of Plasmodium falciparum, the causative agent of malaria Diagram of the life cycle of Plasmodium falciparum, the causative agent of malaria
Life Cycle of Lobster Life Cycle of Lobster
Flowchart of the cell cycle. Flowchart of the cell cycle.
Coolant flow through the impeller and scroll of a coolant pump for a V-type engine. Coolant flow through the impeller and scroll of a coolant pump for a V-type engine.
If the vacuum hose is removed from the fuel-pressure regulator when the engine is running, the ... If the vacuum hose is removed from the fuel-pressure regulator when the engine is running, the ...
The hydrologic cycle "الدورة الهيدرولوجية" The hydrologic cycle "الدورة الهيدرولوجية"
Video: Otitis Media

For a complete list of videos, visit our video library