1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nostrana [21]
3 years ago
11

A point charge q1 is held stationary at the origin. A second charge q2 is placed at point a, and the electric potential energy o

f the pair of charges is 5.4 x 10^-8J. When the second charge is moved to point b, the electric force on the charge does -1.9x10^-8J of work. What is the electric potential energy of the pair of charges when the second charge is at point b? Please explain the answer briefly
Physics
1 answer:
likoan [24]3 years ago
3 0

Answer:

U_{b}=+7.3*10^{-8}J

Explanation:

Given data

Electric potential at point a is Ua=5.4×10⁻⁸J

q₂ moves to point b where a negative work done on it  W_{a-b}=-1.9*10^{-8}J

Required

Electric potential energy Ub

Solution

When a particle moves from a point where the potential is Ua to a point where it is Ub the change in potential energy is equal to work done where the force exerted on the charge is conservative and work done is given by:

W_{a-b}=U_{a}-U_{b}\\U_{b}=U_{a}-W_{a-b}

Now  substitute the given values

So

U_{b}=5.4*10^{-8}J-(-1.9*10^{-8}J)\\U_{b}=+7.3*10^{-8}J

You might be interested in
wo slightly out of tune instruments will create beats when the same note is played. This is a pattern of louder and softer sound
Lostsunrise [7]

This interaction is known as <em>constructive interference</em>.  It's a result of linear superposition.

5 0
3 years ago
Please answer fast in hindi ​
Ipatiy [6.2K]

Answer:

1. Dheere Dheere (slowly slowly)

2. Har (every)

3. Kal (tomorrow)

4. Mat (don't)

5. Andar (inside)

sorry I wasn't able to write in hindi

8 0
2 years ago
Hartman value profile
Grace [21]
What is your question exactly? I'm confused?
6 0
3 years ago
75 pts!
jasenka [17]

again CORRECT ans is 4) light strikes the grooves → different wavelengths of light bend at different angles → diffracted wavelengths reach the eyes → the eyes see different colors.

moderator - plz review the ans as u deleted my right ans n approved the wrong ans :(

6 0
3 years ago
Read 2 more answers
Why in drinking hot water, a thin-bottomed glass is taken?​
taurus [48]

Answer:

beacause it's contracts

Explanation:

when using a large bottomed glass the hot water cools that's why is good to use thin bottomed glass

6 0
3 years ago
Other questions:
  • Think about it: suppose a meteorite collided head-on with mars and becomes buried under mars's surface. what would be the elasti
    6·1 answer
  • Which of the following occurs as light travels farther from its source?
    11·1 answer
  • Which method of heat transfer causes you to get burned when you touch a hot pan
    14·1 answer
  • Krishne wants to measure the mass and volume of a thimble. Which tools should she use?
    11·1 answer
  • Which of the following diseases has been all but eliminated from the United States because of wastewater treatment plants?
    13·2 answers
  • Sounds travels in a ____ wave A. Transverse B. Compressional C. Surface D. Inverted
    8·1 answer
  • In a mixture, the ingredients intermingle and
    10·1 answer
  • What is letaral inversion?​
    6·1 answer
  • When researchers replicate a study, they are seeking to __________.
    11·1 answer
  • What is "the cloud"?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!