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

Author Question: Identical point charges (+20 C) are placed at the corners of an equilateral triangle with sides of ... (Read 337 times)

pepyto

  • Hero Member
  • *****
  • Posts: 547
on: Jul 28, 2018
Identical point charges (+20 C) are placed at the corners of an equilateral triangle with sides of 2.0-m length. How much external energy is required to bring a charge of 45 C from infinity to the midpoint of one side of the triangle?
 a. 26 J
  b. 16 J
  c. 23 J
  d. 21 J
  e. 12 J

Question 2

A charge of +3.0 C is distributed uniformly along the circumference of a circle with a radius of 20 cm. How much external energy is required to bring a charge of 25C from infinity to the center of the circle?
 a. 5.4 J
  b. 3.4 J
  c. 4.3 J
  d. 2.7 J
  e. 6.8 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

SeanoH09

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

b


pepyto

  • Hero Member
  • *****
  • Posts: 547
Reply #2 on: Jul 28, 2018
Thank you!


SeanoH09

  • Sr. Member
  • ****
  • Posts: 323
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

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

Male tule elk in Point Reyes Male tule elk in Point Reyes
Decimal Point Place Values Decimal Point Place Values
Electric Charges Electric Charges
Stand at the side facing the client. Apply L stroke to both sides of the neck with flat fingers ... Stand at the side facing the client. Apply L stroke to both sides of the neck with flat fingers ...
How to find the unknown angle of a triangle using the sine law (Part 2) How to find the unknown angle of a triangle using the sine law (Part 2)
Right Bisector of Triangle Right Bisector of Triangle
Video: Types of Burns

For a complete list of videos, visit our video library