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jek_recluse [69]
3 years ago
5

Why are force fields necessary to describe electric force? 0 A. Electric force acts at a distance. O B. Electric force can only

attract objects. C. Electric force is a form of gravity. D. Electric force attracts two poles.​
Physics
1 answer:
yawa3891 [41]3 years ago
8 0

Answer:

A. Electric force acts at a distance.

Explanation:

"Electric force," just like gravitational force is a <em>"non-contact force." </em>This means that even at a distance, two objects with no physical contact will create movement with the help of electric force. This leads to the concept of <em>"force fields or field force" </em>that explains why a charge object alters the region surrounding it. Once an object enters the region, it immediately experiences its force. An example of this is <u>holding out one's hand near a "</u><u><em>Van de Graaff generator."</em></u> The electric force compels the hair strands to stand up.

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Discussion Topic
Tanya [424]

Answer: Whenever important physicists are discussed, Galileo Galilei, Isaac Newton, and Albert Einstein seem get the most attention. However, as you’ve seen, Galileo formulated or refined many of his discoveries and theories based on the findings of others who came before him, including Aristotle

Explanation:

Whenever important physicists are discussed, Galileo Galilei, Isaac Newton, and Albert Einstein seem get the most attention. However, as you’ve seen, Galileo formulated or refined many of his discoveries and theories based on the findings of others who came before him, including Aristotle

6 0
3 years ago
The Hall effect is to be used to find the sign of charge carriers in a semiconductor sample. The probe is placed between the pol
Alborosie

Answer:

the sign of these carriers is POSITIVE

Explanation:

In the effect, he found the charge carriers that were subjected to two forces, one electric and the other magnetic.

        F = F_e + F_m = q E + q v x B

bold indicates vectors

The electric field goes to the east, therefore the current also has this direction, the vector product of the velocity of the charge carriers towards the east and the magnetic field upwards, using the right hand rule a magnetic force is created towards the north if the carriers are positive.

In the exercise they indicate that the north side has a higher potential than the south side, therefore there must be an accumulation of carriers on this side that create an electric field (Hall) that is put to the magnetic force until reaching equilibrium when the total force is zero.

Therefore the sign of these carriers is POSITIVE

6 0
3 years ago
What does EMR tell us about wavelength, amplitude, and frequency?
Georgia [21]

Answer:

Amplitude is one-half the height of the wave from peak to trough. Wavelength and frequency are inversely proportional: As the wavelength increases, the frequency decreases.

I hope this helps in a way...

5 0
3 years ago
Drew wants to convert square mils to circular mils in an area calculation. How does he do this?
bija089 [108]

Answer:

i dont know

Explanation:

blah blah blah your welcome

6 0
3 years ago
Two cars collide at an intersection. One car has a mass of 1300 kg and is
Nata [24]

Answer:B

Explanation:sorry they removed my answer for some reason.

8 0
2 years ago
Read 2 more answers
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