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elena-14-01-66 [18.8K]
2 years ago
6

How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is

Physics
1 answer:
inn [45]2 years ago
5 0
Two small spheres spaced 20.0 cm apart have equal charge.

How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N?

Number of Electrons = ?
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What best describes a sound wave? transverse and electromagnetic longitudinal and mechanical longitudinal and electromagnetic tr
GalinKa [24]

Sound needs medium to travel and it can not travel without medium

so sound wave is a travelling wave

now we also know that sound wave propagate in form of rarefaction and compression.

So all medium particles travel in the direction of wave only

so it is a longitudinal wave also

so correct answer will be

<em>mechanical longitudinal </em>

7 0
3 years ago
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Write the terms involved in s=ut+1\2​
cricket20 [7]

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deff fn [24]

Answer:

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Explanation:

3 0
2 years ago
Determine the weight of an average physical science textbook whose mass is 3.1 kilograms. The acceleration due to gravity is 9.8
Mrrafil [7]

Given:

mass is 3.1 kilograms

The acceleration due to gravity is 9.8m/s2

 

Required:

Weight

 

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W = mg

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5 0
2 years ago
Is the temperature and density of Earth's crust high or low? Why?
Setler [38]

Answer:

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Explanation:

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3 years ago
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