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kaheart [24]
4 years ago
7

Which of the following is caused by the interaction of charged particles, magnetic lines of force, and the atmosphere in polar r

egions? Group of answer choices 1. Van Allen belts 2. dipole 3. aurorae 4. troposphere
Physics
1 answer:
sweet [91]4 years ago
3 0

Answer:

Option (3)

Explanation:

Aurora refers to those northern and southern light observed in both the poles of earth. At the poles, when sunlight comprised of numerous charged particles are emitted from the sun are incident on the atmosphere of the earth, it reacts with the earth's magnetic field and results in the rapid movement of electrons within the atoms, from a region of lower energy state to a higher state. After sometimes when these electrons are back into the lower-energy state then photons are released in the form of beautiful lights which are known as aurora.

These lights are known as aurora borealis when observed in the north pole, and aurora australis when observed in the south pole.

Thus, the correct answer is option (3).

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1. Use Coulomb’s Law (equation below) to calculate the approximate force felt by an electron at point A in the schematic below.
Amiraneli [1.4K]

Answer:

Explanation:

From the data it appears that A is the middle point between two charges.

First of all we shall calculate the field at point A .

Field due to charge -Q ( 6e⁻ ) at A

= 9 x 10⁹ x 6 x 1.6 x 10⁻¹⁹ / (2.5)² x 10⁻⁴

= 13.82 x 10⁻⁶ N/C

Its direction will be towards Q⁻

Same field will be produced by Q⁺ charge . The direction will be away

from Q⁺  towards Q⁻ .

We shall add the field  to get the resultant field  .

= 2 x 13.82 x 10⁻⁶

= 27.64 x 10⁻⁶ N/C

Force on electron put at A

= charge x field

= 1.6 x 10⁻¹⁹ x 27.64 x 10⁻⁶

= 44.22 x 10⁻²⁵ N

8 0
4 years ago
How is gamma rays used to transfer energy?
expeople1 [14]
Gamma ray<span> (also called </span>gamma radiation<span>), denoted by the lower-case Greek letter </span>gamma,<span> is penetrating </span>electromagnetic radiation<span> of a kind arising from the </span>radioactive decay<span> of </span>atomic nuclei<span>. It consists of </span>photons<span> in the highest observed range of </span>photon energy<span>. </span>
6 0
4 years ago
Kamal said the distance from the top of the balloon to the ground in the Example is Ï···· 353 ft. What mistake might Kamal have
snow_lady [41]

Complete question is;

Kamal said the distance from the top of the balloon to the ground in the Example image attached is √353 ft. What mistake might Kamal have made?

Answer:

the mistake Kamal made is that she probably used 17 ft as the perpendicular side of the triangle with b as the hypotenuse instead of using 17ft as the hypotenuse

Explanation:

From the image attached, we can see that the distance from the top of the balloon which is blue in color to the ground is denoted by "b".

Now the triangle is a right angle triangle with hypotenuse = 15ft + 2ft = 17 ft; the adjacent side = 8 ft, while the opposite side is "b".

Thus, we can use pythagoras theorem to solve this as;

b = √(17² - 8²)

b = √(289 - 64)

b = √225

b = 15ft

However,we are told Kamal got b as √353 ft.

From inspection of the calculations we just did, if we had used addition instead of subtraction, we would have gotten b = √353 ft.

Thus, we can under that the mistake Kamal made is that she probably used 17 ft as the perpendicular side of the triangle with b as the hypotenuse instead of using 17ft as the hypotenuse.

7 0
3 years ago
The more mass an object has,the less inertia the object has. True or False
dedylja [7]

Answer:

This is true. objects that have a greater mass has greater interia. which also means objects that have a less mass has also less interia.

Explanation:

i hope this helps!!!

7 0
3 years ago
Which of the following requires constant agonist-antagonist muscle contraction
vodka [1.7K]

Answer: Dynamic balance

Explanation: Dynamic balance movements are movements in which constant agonist-antagonist muscle contractions occur in order to maintain a certain position or posture. ISSA pg 121

5 0
3 years ago
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