« previous next »

Author Question: Identical point charges (+50 C) are placed at the corners of a square with sides of 2.0-m length. ... (Read 183 times)

sdfghj

  • Hero Member
  • *****
  • Posts: 552
on: Jul 28, 2018
Identical point charges (+50 C) are placed at the corners of a square with sides of 2.0-m length. How much external energy is required to bring a fifth identical charge from infinity to the geometric center of the square?
 a. 41 J
  b. 16 J
  c. 64 J
  d. 10 J
  e. 80 J

Question 2

Through what potential difference must an electron (starting from rest) be accelerated if it is to reach a speed of 3.0  107 m/s?
 a. 5.8 kV
  b. 2.6 kV
  c. 7.1 kV
  d. 8.6 kV
  e. 5.1 kV


akudia

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri
Identical twins share 100 percent of their segregating genes. Identical twins share 100 percent of their segregating genes.
Punnett Square Punnett Square
Write in vertex form by completing the square Write in vertex form by completing the square
Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh
The Chi-Square Table The Chi-Square Table
Video: Introduction to Eating Disorders

For a complete list of videos, visit our video library