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 19 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
Gracias!

bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

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

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

water movement water movement
A single overhead camshaft engine with a timing belt that also rotates the water pump. A single overhead camshaft engine with a timing belt that also rotates the water pump.
The movement of water vapor molecules exerts vapor pressure on surfaces. The movement of water vapor molecules exerts vapor pressure on surfaces.
Waterspouts are tornadoes that occur over warm-water bodies, instead of over land. Waterspouts are tornadoes that occur over warm-water bodies, instead of over land.
Carbon Monoxide and Water Molecules Interaction Carbon Monoxide and Water Molecules Interaction
Better land and water management and appropriate crop selection can help eliminate hunger Better land and water management and appropriate crop selection can help eliminate hunger
Video: A timeline of the teeth (Explained - No Audio)

For a complete list of videos, visit our video library