This topic contains a solution. Click here to go to the answer

Author Question: Theories are derived directly from observations. Indicate whether the statement is true or ... (Read 31 times)

tfester

  • Hero Member
  • *****
  • Posts: 534
Theories are derived directly from observations.
 
  Indicate whether the statement is true or false

Question 2

A heat engine operates between 800 K and 300 K, but its efficiency is only 80 of the maximum possible. What is the actual efficiency of the engine?
 
  A)
 
  30
 
  B)
 
  70
 
  C)
 
  38
 
  D)
 
  50
 
  E)
 
  36



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mammy1697

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

FALSE

Answer to Question 2

D



tfester

  • Hero Member
  • *****
  • Posts: 534
Both answers were spot on, thank you once again



mammy1697

  • Sr. Member
  • ****
  • Posts: 341

 

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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 most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

For a complete list of videos, visit our video library