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
kodGreya [7K]
3 years ago
8

The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point.

What is the electric potential energy of this charge at the origin?
Physics
1 answer:
vredina [299]3 years ago
7 0

Answer:

-320 μJ.

Explanation:

Consider a point with an electrical charge of q. Assume that V is the electrical potential at the position of that charge. The electrical potential of that point charge will be equal to:

\text{Potential Energy} = q \cdot V.

Keep in mind that since both q and V might not be positive, the size of the electrical potential energy might not be positive, either.

For this point charge,

  • q = \rm -8.0\; \mu C; (that's -8.0 microjoules, which equals to \rm -8.0\times 10^{-6}\; J)
  • V = \rm 40\; V.

Hence its electrical potential energy:

\text{Potential Energy} = q\cdot V = \rm (-8.0\; \mu C) \times 40\; V = -320\; \mu J.

Why is this value negative? The electrical potential energy of a charge is equal to the work needed to bring that charge from infinitely far away all the way to its current position. Also, negative charges are attracted towards regions of high electrical potential. Bringing this \rm -8.0\; \mu C negative charge to the origin will not require any external work. Instead, this process will release 320 μJ of energy. As a result, the electrical potential energy is a negative value.

You might be interested in
Heat pumps move heat from __________ to __________ areas & REQUIRES energy. *
sergejj [24]
The correct answer to this question is false
8 0
2 years ago
Two conductors made of the same material are connected across the same potential difference. Conductor A has three times the dia
Vitek1552 [10]

Answer:

<em>Good Luck!</em>

<em />

Explanation:

5 0
2 years ago
A. 24.89<br> B. 25.89<br> C. 17.74<br> D. 19.73
Veronika [31]

Answer: D

Explanation:

Just did it got an 100

5 0
2 years ago
What is the smallest possible piece an element in broken down into my normal laboratory processes
lozanna [386]

answer would be: A. atom

8 0
3 years ago
Why are special techniques and extinguishing agents are required to fight combustible metals fires?
d1i1m1o1n [39]
Cucucicicicivigovogovphphpbpb
7 0
3 years ago
Other questions:
  • A person is placed in a large, hollow, metallic sphere that is insulated from ground. (a) If a large charge is placed on the sph
    14·1 answer
  • is a climate cycle where the temperature of the Ocean changes because of movements of air and ocean currents. During this period
    8·1 answer
  • Determine the centripetal force on a vehicle rounding a circular curve with a radius of 80 m at a constant speed of 90 km/h if t
    12·1 answer
  • Which layer of the atmosphere is directly above the troposhpere? A.troposhpere B.stratosphere C.mesosphere D.exoshpere
    9·2 answers
  • How is Mercury different from all of the other metals in the periodic table <br><br>​
    6·2 answers
  • ASAP Is a phone sliding down a binder potential and kinetic energy.
    14·2 answers
  • The absolute magnitude of a star is the amount of light received by Earth. true or false
    14·2 answers
  • What is the force when an object exerts 15 pascal pressure on a square surface of side 5 meters
    6·1 answer
  • An object of mass m 1 moving with speed v collides with another object of mass m 2 at rest and stick to it. Find the impulse to
    5·1 answer
  • What were Katherine Johnson publications?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!