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
WARRIOR [948]
3 years ago
8

How much energy does it take to move a particle with a charge of +2 nC, from an initial position infinitely far from a second pa

rticle with a charge of +3 mC, to a final position 0.20 m from the second particle?
Physics
1 answer:
vova2212 [387]3 years ago
7 0

To solve this problem we will apply the concept related to the electric potential energy, defined from the laws of Coulomb for which it is necessary to,

U = \frac{kq_1q_2}{r}

Here,

k = Coulomb's constant

q_{1,2}= Charge of each object

r = Distance,

Our values are given as,

q_1 = 2nC = 2*10^{-9}

q_2 =3mC =3*10^{-3} C

r = 0.2m

Finally replacing we have that,

U = \frac{kq_1q_2}{r}

U = \frac{(9*10^9)(2*10^{-9})(3*10^{-3})}{0.2}

U = 0.27J

Therefore the energy necessary to move the particle is 0.27J

You might be interested in
One of the ways that scientists determine the distance between Earth and other objects in space is to send light waves toward an
Ahat [919]

Answer:

a star in andromeda

Explanation:

all of the other objects are in the milkyway (where we are) and the andromeda galaxy is 2 million light years away from us

7 0
3 years ago
An alkane has molecular weight 86. Write its molecular formula. What will be its physical state?
Brums [2.3K]

C6H14

Gaseous state

it's unsaturated hence gaseous

8 0
3 years ago
What kind of symmetry do you have
Keith_Richards [23]
During the daytime, I have mostly line symmetry.

During the night, I often have almost spherical symmetry.
5 0
3 years ago
Read 2 more answers
A proton and an electron are released from rest, with only the electrostatic force acting. Which of the following statements mus
lbvjy [14]

Answer:

their electrical potential energy decreases. True, because of the negative sign as the distance decreases, it becomes more negative.

The kinetic energy increases. True, the force is attractive as the distance decreases the force increases, so acceleration and therefore the speed

Explanation:

The only force between the proton and the electron is electric

      Fe = k q1q2 / r2

      Fe = - k e2 / r2

We can see that it is an attractive force (negative sign)

The electric power energy is

       U = k q1 q2 / r

       U = -k e2 / r

 

The kinetic energy is

       K = ½ m v2

With the expressions for each term we can analyze the sentences :

Their electric potential energy increases. False,

their electrical potential energy decreases. True, because of the negative sign as the distance decreases, it becomes more negative.

The kinetic energy increases. True, the force is attractive as the distance decreases the force increases, so acceleration and therefore the speed

Kinetic energy decreases False

The acceleration decreases.  False, as the force increases so does the acceleration

7 0
3 years ago
Please help Math Phys
Lorico [155]

Answer:

269 m

45 m/s

-58.6 m/s

Explanation:

Part 1

First, find the time it takes for the package to land.  Take the upward direction to be positive.

Given (in the y direction):

Δy = -175 m

v₀ = 0 m/s

a = -9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

(-175 m) = (0 m/s) t + ½ (-9.8 m/s²) t²

t = 5.98 s

Next, find the horizontal distance traveled in that time:

Given (in the x direction):

v₀ = 45 m/s

a = 0 m/s²

t = 5.98 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (45 m/s) (5.98 s) + ½ (0 m/s²) (5.98 s)²

Δx = 269 m

Part 2

Given (in the x direction):

v₀ = 45 m/s

a = 0 m/s²

t = 5.98 s

Find: v

v = at + v₀

v = (0 m/s²) (5.98 s) + (45 m/s

v = 45 m/s

Part 3

Given (in the y direction):

Δy = -175 m

v₀ = 0 m/s

a = -9.8 m/s²

Find: v

v² = v₀² + 2aΔy

v² = (0 m/s)² + 2 (-9.8 m/s²) (-175 m)

v = -58.6 m/s

6 0
3 years ago
Other questions:
  • Why is nuclear fusion more attractive as an energy source than nuclear fission?
    7·1 answer
  • Calculate the average speed of a gazelle that runs 140 meters in 5.0 seconds
    12·1 answer
  • ____ are streamlike movements of water in the ocean.(what is blank)
    15·1 answer
  • A 11-inch candle is lit and burns at a constant rate of 0.9 inches per hour. Let t t represent the number of hours since the can
    7·1 answer
  • What is different about the different parts of the electromagnetic spectrum
    13·1 answer
  • Your teacher had not exercised since the beginning of distance learning. She decided to exercise by walking in the park. The par
    11·1 answer
  • The energy transformation a leaf on a tree undergoes when sunlight shines on it is an example of what?
    9·1 answer
  • How high must you lift a 25 Newton book for it to have the same increase in potential energy as a 20 Newton book that was lifted
    12·1 answer
  • The efficiency of a canot engine is more when the temperature of the sink is increased by 50%
    10·1 answer
  • Which quantity is a vector quantity?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!