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

Author Question: Is it possible for the total mechanical energy of a moving particle to be negative? a. No, because ... (Read 78 times)

ghost!

  • Hero Member
  • *****
  • Posts: 560
on: Jul 28, 2018
Is it possible for the total mechanical energy of a moving particle to be negative?
 a. No, because a moving particle has positive kinetic energy.
  b. No, because potential energy cannot have a value more negative than the value of the positive kinetic energy of the particle.
  c. Only if friction is involved. d. Yes

Question 2

If a heat engine has an efficiency of 30 and its power output is 600 W, what is the rate of heat input from the combustion phase?
 a. 1800 W
  c. 2000 W
  b. 2400 W
  d. 3000 W


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

todom5090

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


ghost!

  • Hero Member
  • *****
  • Posts: 560
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


todom5090

  • Sr. Member
  • ****
  • Posts: 328
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

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

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Basic energy of a human life Basic energy of a human life
Bipolar disease. The term bipolar means “pertaining to two poles.” The individual with this form of Bipolar disease. The term bipolar means “pertaining to two poles.” The individual with this form of
Role of binding energy in catalysis Role of binding energy in catalysis
coagulase negative Staphylococcus on Blood agar coagulase negative Staphylococcus on Blood agar
When the exhaust is rich, the PCM applies a negative current into the pump cell. When the exhaust is rich, the PCM applies a negative current into the pump cell.
Energy and Energy Units Energy and Energy Units
Video: Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

For a complete list of videos, visit our video library