PHYSICS HIGH SCHOOL

The potential difference between two points, A and B, in an electric field is 2.00 volts. The energy required to move a charge of 8x10^-19 coulomb from point A to point B is

Answers

Answer 1

Answer:

The energy required to move the given charge from point A to point B is of $1.6 * 10^(-18) \;\rm J$ .

Given data:

The potential difference between the points A and B is, V' = 2.00 V.

The magnitude of charge is, $q = 8 * 10^(-19)\;\rm C$ .

The given problem is based on the work done to shift a charge from one point to another.

When a charge is moved between the two points, then some work is to be done, which gets stored in the form of electrostatic potential energy.
And the mathematical expression for the electrostatic potential energy is,

W = U

W = q × V'

Solve by substituting values as,

$W = (8 * 10^(-19)) * 2.00\n\nW = 1.6 * 10^(-18) \;\rm J$

Thus, we can conclude that the energy required to move the given charge from point A to point B is of $1.6 * 10^(-18) \;\rm J$ .

learn more about the electrostatic potential energy here:

brainly.com/question/20848547

Answer 2

Answer:

Answer:

$W_A_B=-1.6* 10^(-18) J$

Explanation:

Let A and B be two points located in a uniform electric field, A being a distance d from B in the direction of the field. The work that an external force must do to bring a unit positive charge q from the reference point to the point considered against the electric force at constant speed, mathematically is expressed by:

$V_B_A=(W_A_B)/(q)$

Therefore, isolating $W_A_B$ and replacing the data provided:

$W_A_B=V_B_A *q=-2*(8* 10^(-19)) =-1.6* 10^(-18)J$

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When two point charges are a distance d apart, the magnitude of the electrostatic force between them is F. If the distance between the point charges is increased to 3d, the magnitude of the electrostatic force between the two charges will be

Answers

Answer:

The magnitude of the electrostatic force decreases by a factor 9

Explanation:

The electrostatic force between two charges is given by:

$F=k(q_1 q_2)/(d^2)$

where

k is the Coulomb's constant

q1 and q2 are the two charges

d is the distance between the two charges

We see that the magnitude of the force is inversely proportional to the square of the distance. If the distance is increased to 3d: d' = 3d, the new electrostatic force would be:

$F'=k(q_1 q_2)/((d')^2)=k(q_1 q_2)/((3d)^2)=(1)/(9) k(q_1 q_2)/(d^2)=(F)/(9)$

So, the electrostatic force decreases by a factor 9.

Decreased by a factor of 9

Which of the following conversion factors would you use to change 18 kilometers to meters? A.) 1,000 m/1 km
B.) 1 km/1,000 m
C.) 100 m/1 km
D.) 1 km/100 m

Answers

Answer:

The answer is A) 1,000 meters = 1 Kilometer.

Explanation:

To convert 18 Kilometers into meters, one would have to multiply the figure given in Kilometer by 1000.

Therefore we have 18 x 1000

= 18,000.

So 18 Kilometers is also 18,000 meters when converted.

Cheers!

use choice B. 1 km / 1000 m

from what result that 18 km = 18 000 m

hope helped

Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals that scientists describe as which of the following? A.
revolutionary
B.
rotational
C.
periodical
D.
elliptical

Answers

Their orbits are more like ovals that scientists describe as elliptical.

Orbit

It is a regular, repeating path, which one object in space takes around another one.

The comets, planets, asteroids, and other objects in the solar system orbit the Sun.

The majority of the objects orbiting the Sun move close or along to an imaginary flat surface. This imaginary surface is known as the ecliptic plane.

All the orbits are elliptical that shows that they are ellipse, identical to an oval.

The planets in the solar system do not revolve around the Sun in perfect circles, their orbits are more like ovals, which are illustrated by scientists as elliptical.

Thus, the correct answer is option D.

To know more about:

brainly.com/question/2513966

The correct answer of the given statement above would be option D. The planets in our solar system do not revolve around the run in perfect circles. And their orbits are more like of a shape of an oval in which it is described as elliptical. This is according to the Law of Orbits by Kepler.

A cow standing atop a building in Times Square recalled a funny joke and began to laugh. The uncontrollable laughter caused the cow to fall over the side of the building. He fell for a time period of 3.5 s and landed in a bed of bushes. How fast was the cow moo-ving when he reached the bushes?Which equation should be used to solve the problem?

Answers

Answer:

Vf = 34.3 m/s

1st equation of motion was used to solve.

Explanation:

In order to find the final speed of the cow, when it hits the bushes, we can use first equation of motion:

Vf = Vi + gt

where,

Vf = Final Velocity of Cow = ?

Vi = Initial Velocity of Cow = 0 m/s

g = acceleration due to gravity = 9.8 m/s²

t = time taken = 3.5 s

Therefore,

Vf = 0 m/s + (9.8 m/s²)(3.5 s)

Vf = 34.3 m/s

1st equation of motion was used to solve.

if two wires run parallel and the current passes through both wires in the same direction, which happens to the wires?

Answers

Answer:

attracts each other

Explanation:

By the use of fleming's left hand rule, the direction of force is such that the both the wires attract each other.

They both create magnetic field around each wire. The resulting magnetic field causes attraction between the wires.

Sound travels fastest in _____.

Answers

Answer:

Sound travels fastest in solids

Explanation:

Sound is a type of mechanical waves. Mechanical waves are produced by the oscillations of the particles in the medium the wave is travelling through.

The speed of a mechanical wave depends on the density of the medium: the higher the density, the higher the speed. This is because in a medium with higher density, atoms/molecules are closer together, so they collide more frequently and therefore the wave can be transmitted faster and more efficiently.

Since solids have higher density than liquids and gases, this also means that mechanical waves (so, sound as well) travel faster in solids than liquids or gases.

Sound travels fastest in solids,than liquids, and faster in liquids, than in gases.

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