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

Author Question: Earth's primary energy source is A) the Sun. B) fossil fuel. C) electricity. D) ... (Read 70 times)

Chloeellawright

  • Hero Member
  • *****
  • Posts: 588
Earth's primary energy source is
 
  A) the Sun.
  B) fossil fuel.
  C) electricity.
  D) geothermal.

Question 2

A car's engine is 20 efficient. When cruising, the car encounters an average retarding force of 1000 N. If the energy content of fuel is 40 megajoules per liter, how many kilometers per liter does the car achieve?
 
  A) 8
  B) 10
  C) 12
  D) 14
  E) none of the above



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

allisonblackmore

  • Sr. Member
  • ****
  • Posts: 330
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A





 

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

For a complete list of videos, visit our video library