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

Author Question: Is a fuel-cell vehicle properly described as a heat engine? A) Yes, because it uses thermal ... (Read 88 times)

panfilo

  • Hero Member
  • *****
  • Posts: 572
Is a fuel-cell vehicle properly described as a heat engine?
 
  A) Yes, because it uses thermal energy to produce electricity.
  B) Yes, because it uses chemical energy to create electric energy.
  C) Yes, because it uses thermal energy to do work.
  D) No, because it converts chemical energy directly to electric energy.
  E) No, because it converts electric energy directly into chemical energy.

Question 2

The U.S. national debt is about 6 trillion. Expressed in powers of ten, this is
 
  A) 6  106. B) 6  109. C) 6  1015. D) 6  1012. E) 6  1010.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

b614102004

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

D

Answer to Question 2

D




panfilo

  • Member
  • Posts: 572
Reply 2 on: Jul 29, 2018
Gracias!


ghepp

  • Member
  • Posts: 361
Reply 3 on: Yesterday
Excellent

 

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Cyanide works by making the human body unable to use oxygen.

For a complete list of videos, visit our video library