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

Author Question: A force F is exerted on an object of mass m through a distance d. A force twice as large (2F) is ... (Read 59 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
on: Jul 28, 2018
A force F is exerted on an object of mass m through a distance d. A force twice as large (2F) is exerted on a mass 2m also through the distance d. Explain the relation between the amount of work done in the two cases.
 
  What will be an ideal response?

Question 2

What is the basic difference between electrons in a valence and a conduction band in a semiconductor? Explain.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

owenfalvey

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 28, 2018
Answer to Question 1

In this case, there are two possible answers.
(1) The force and displacement are parallel or antiparallel.
because the distance is the same, the force that is twice as large does twice the work.
(2) The force and displacement are perpendicular.
No work is done, no matter what.

Answer to Question 2

Electrons in the valence band are unable to move; electrons in the conduction band
can move in response to an electric field.


penza

  • Member
  • Posts: 1,022
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

Missbam101

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Species richness decreases with distance from the source pool. Species richness decreases with distance from the source pool.
Plasma protein binding and drug availability: (a) drug exists in a free state or bound to plasma pro Plasma protein binding and drug availability: (a) drug exists in a free state or bound to plasma pro
Ardipithecus kadabba has large canine teeth that are only slightly smaller than those of living apes Ardipithecus kadabba has large canine teeth that are only slightly smaller than those of living apes
Different hand positions and working surfaces for massage applications on large muscles. A. Flat ... Different hand positions and working surfaces for massage applications on large muscles. A. Flat ...
Climate models the flow of mass and energy Climate models the flow of mass and energy
Determine the mass of a nonvolatile, nonionizing compound that must be added to 4.76 kg of ... Determine the mass of a nonvolatile, nonionizing compound that must be added to 4.76 kg of ...
Video: Monohybrid crosses

For a complete list of videos, visit our video library