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 69 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?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

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?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Gram-positive and Gram-negative bacteria. Gram-positive and Gram-negative bacteria.
Energy-flow diagram for a Georgia salt marsh. Energy-flow diagram for a Georgia salt marsh.
Negative feedback control of the female reproductive hormones Negative feedback control of the female reproductive hormones
The Energy Sector The Energy Sector
Carbohydrates Are Energy-Containing Nutrients Carbohydrates Are Energy-Containing Nutrients
Energy Use by Different Country Groups Energy Use by Different Country Groups
Video: Glycolysis - Introduction to ATP and the burning of sugar

For a complete list of videos, visit our video library