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Alex777 [14]
3 years ago
11

Consider an electric dipole, composed of charges +q and -q separated by distance d, that is viewed from a large distance (large

compared to d). What do we expect about the electric field due to the dipole viewed from this distance?
A. The electric field could be weaker or stronger than a single point charge q viewed from the same distance.B. The electric field is significantly weaker than the electric field due to a single point charge q viewed from the same distance.C. The electric field is significantly stronger than a single point charge q viewed from the same distance.D. The electric field will be exactly zero.
Physics
1 answer:
Sidana [21]3 years ago
5 0

I tidy up the question as follows (Please notify me for any mistakes in the question):

Consider an electric dipole, composed of charges +q and -q separated by distance d, that is viewed from a large distance (large compared to d). What do we expect about the electric field due to the dipole viewed from this distance?

A. The electric field could be weaker or stronger than a single point charge q viewed from the same distance.

B. The electric field is significantly weaker than the electric field due to a single point charge q viewed from the same distance.

C. The electric field is significantly stronger than a single point charge q viewed from the same distance.

D. The electric field will be exactly zero.

Answer:

C) The electric field is significantly stronger than a single point charge q viewed from the same distance.

Explanation:

Electric field strength for single point charge is governed by the following equation:

E = kq/(r^2)

By having two electric dipole positive and negative, at any space between the dipoles, it will experience attraction and repulsion at the same time resulting the superposition of forces between the two forces.

Since both of the forces will be acting to the same way, the forces will be added.

Since force is proportional to energy, the electrical potential energy or in this case electric field will become significantly stronger.

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A sailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5​​​​m​​/s2 for 4s. After t
Ber [7]

Answer:

+7.0 m/s

Explanation:

Let's take rightward as positive direction.

So in this problem we have:

a = -2.5 m/s^2 acceleration due to the wind (negative because it is leftward)

t = 4 s time interval

v = -3.0 m/s is the final velocity (negative because it is leftward)

We can use the following equation:

v = u + at

Where u is the initial velocity

We want to find u, so if we rearrange the equation we find:

u = v - at = (-3.0 m/s) - (-2.5 m/s^2)(4 s)=+7.0 m/s

and the positive sign means the initial direction was rightward.

6 0
3 years ago
A boy starts from point A and walks 3 meters toward the north, then turns around and walks 6 meters toward the south.
docker41 [41]

Answer:

Total distance traveled = 9 m

Explanation:

Given:

Distance travel towards north = 3 meter

Distance travel towards south = 6 meter

Find:

Total distance traveled

Computation:

Total distance traveled = Sum of total distance

Total distance traveled = Distance travel towards north + Distance travel towards south

Total distance traveled = 3 m + 6 m

Total distance traveled = 9 m

3 0
3 years ago
What measures the distance between two consecutive crests of a wave?
Marina86 [1]
Answer A is incorrect
A crest is just one point. It is not the distance between 2 crests.

B  is incorrect
A trough is just 1 point. It is not the distance between 2 troughs.

C is incorrect.
the amplitude measures the height of a crest from the middle of the wave to the crest (or trough).

D is the correct answer. That is the distance between 2 crests or 2 troughs 
8 0
3 years ago
On a smooth horizontal floor, an object slides into a spring which is attached to another mass that is initially stationary. Whe
HACTEHA [7]

Answer:

E) momentum and mechanical energy

Explanation:

In the context, an object is attached to the another mass with a spring which is initially at a rest position. Now when the spring is compressed, the two masses moves with the same speed. Now since the both the masses combines with the spring to move together they are considered as one system and in this case the momentum and the kinetic energy will be conserved.

The kinetic energy and momentum of the system after collision and the kinetic energy and momentum of the two masses before collision will be constant.

3 0
3 years ago
Nicole throws a ball at 25 m/s at an angle of 60 degrees abound the horizontal. What is the range of the ball?
just olya [345]

Answer:

the range or the ball is 48.81 m

Explanation:

given;

Nicole throws a ball at 25 m/s at an angle of 60 degrees abound the horizontal.

find:

What is the range of the ball?

solution:

let Ф = 25°

Vo = 25 m/s

<u>consider x-motion using time of fight: x = Vox * t</u>

where x = R = range

t =<u> 2 Voy </u>

      g

R =<u> Vo² sin (2Ф)</u>

           g

plugin values into the formula:

R = <u>(25)² sin (2*25) </u>

               9.81

R = 48.81 m

therefore, the range or the ball is 48.81 m

4 0
3 years ago
Read 2 more answers
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