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AysviL [449]
3 years ago
13

Select the correct answer. Which statement best explains the relationship between electric force and the charges on two interact

ing objects? A. Electrical force is directly proportional to the product of the charges on the two objects. B. Electrical force is inversely proportional to the product of the charges on the two objects. C. Electrical force is inversely proportional to the product of the squares of the charges on the two objects. D. Electrical force is directly proportional to the product of the squares of the charges on the two objects.
Physics
2 answers:
shtirl [24]3 years ago
7 0

Answer:

Electrical force is directly proportional to the product of the charges on the two objects.

Bogdan [553]3 years ago
6 0

Answer:

Electrical force is directly proportional to the product of the squares of the charges on the two objects

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Answer:

T = mg/6

Explanation:

Draw a free body diagram (see attached).  There are two tension forces acting upward at the edge of the cylinder, and weight at the center acting downwards.

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mgr = (1/2 mr² + mr²) α

mgr = 3/2 mr² α

g = 3/2 r α

α = 2g / (3r)

(Notice that you have to use parallel axis theorem to find the moment of inertia of the cylinder about the point on its edge rather than its center.)

Now, sum of the forces in the y direction:

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2T − mg = m (-a)

2T − mg = -ma

Since a = αr:

2T − mg = -mαr

Substituting expression for α:

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What is the origin of the atomic emission spectrum of an element
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Answer:

The electronic transition of an electron back to a lower energy level generates an emission spectrum.

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Remember that an electron has energy levels in an atom or ion, at which each energy level has a specific value.

The energy values will differ from one element to another. So, it can be concluded that each element has a unique pattern of emission lines.

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