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serg [7]
4 years ago
5

How do you know that potassium an alkali metal is highly reactive

Physics
1 answer:
Pavel [41]4 years ago
7 0

Potassium is in the most reactive group of elements, the alkali metals, but it's not the most reactive metal within the group. The alkali metals, Group 1A, are the most reactive metals because they have one valence or outer electron. They lose this electron very easily, forming ions with a charge of +1.

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A is the answer  of course
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A smooth circular hoop with a radius of 0.800 m is placed flat on the floor. A 0.300-kg particle slides around the inside edge o
Marrrta [24]

Answer:

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Explanation:

Given that

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a)

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b)

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Now by putting the values

V=\sqrt{0.8\times 10}

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KE=\dfrac{1}{2}0.3\times 2.82^2

KE=1.19 J

ΔKE= KEi - KE

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ΔKE=13.80 J

The minimum energy required to complete 2 revolutions = 2 x 11.25 J

                                                                                                    = 22.5 J

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Number of revolution = 1

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3 years ago
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The electric flux through a square-shaped area of side 5 cm near a very large, thin, uniformly-charged sheet is found to be 3\ti
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Answer:

Explanation:

Given

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