This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An object completely submerged in water must either rise or fall. Indicate whether the statement ... (Read 54 times)

tiffannnnyyyyyy

  • Hero Member
  • *****
  • Posts: 512
on: Jul 27, 2018
An object completely submerged in water must either rise or fall.
 
  Indicate whether the statement is true or false

Question 2

Why don't we use efficiency for rating refrigerators, like we rate engines, instead of the Coefficient of Performance?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jomama

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jul 27, 2018
Answer to Question 1

FALSE

Answer to Question 2

In both cases we desire a ratio of what we want divided by what it costs; for a refrigerator this is heat absorbed/work input (COP) but for an engine this is work out/heat in (= eff).


tiffannnnyyyyyy

  • Member
  • Posts: 512
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

nanny

  • Member
  • Posts: 313
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Upward transport of water in xylem. Upward transport of water in xylem.
Earth, water, air Earth, water, air
Attraction between water molecules showing polar covalent bonding. Attraction between water molecules showing polar covalent bonding.
The aquaporin water channel The aquaporin water channel
Water-based Diseases Water-based Diseases
A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ... A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ...
Video: Mycobacterium tuberculosis: Drug Resistance and Natural Selection

For a complete list of videos, visit our video library