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 79 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?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Hydrogen burns to produce energy and water Hydrogen burns to produce energy and water
Income per Capita versus Total Fertility Rate Income per Capita versus Total Fertility Rate
If a meteor (148 kg) is moving with a velocity of 112 m/s , and breaks into two parts, where ... If a meteor (148 kg) is moving with a velocity of 112 m/s , and breaks into two parts, where ...
A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 below the horizontal ... A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 below the horizontal ...
Mechanisms of negative control of transcription Mechanisms of negative control of transcription
Video: Lipid catabolism ( ketogenesis and oxidation of glycerol) and Lipid anabolism (lipogenesis)

For a complete list of videos, visit our video library