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Katena32 [7]
2 years ago
5

What is the resistance of a 20.0-m-long piece of 12-gauge copper wire having a 2.053-mm diameter?

Chemistry
1 answer:
tiny-mole [99]2 years ago
8 0

The resistance of the copper wire is 0.1039 Ω.

In calculating the resistance of a wire, the formula below can be used.

Resistance = (Resistivity*Length of wire)/(Cross-section Area)

The resistivity of copper wire is 1.72 x 10-8 Ωm. The length of the wire is 20.0 m and the area of the wire is 3.3103x10-6 square meters. The area of the wire is calculated by using the formula below.

Cross-section area= (π/4)(diameter)^2

Cross-section area=(π/4)(2.053 mm or 2.053x10-3 m)^2

Cross-section area= 3.3103x10-6 square meters

Calculating for the resistance of the wire:

Resistance= (1.72x10-8 Ωm * 20.0 m)/( 3.3103x10-6 m2)

Resistance=0.1039 Ω

For more information regarding resistance, please refer to the link brainly.com/question/17055655.

#SPJ4

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4 0
3 years ago
Consider these elements: N, Mg, O, F, Al. a. Write the electron configuration for each element. b. Arrange the elements in order
My name is Ann [436]

Answer:

N- 1s2 2s2 2p3

Mg- 1s2 2s2 2p6 3s2

O- 1s2 2s2 2p4

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Explanation:

Order of decreasing atomic radius

Mg,Al, N,O,F

Order of increasing ionization energy

Mg,Al, N,O,F

Reason:

Atomic radius decreases with increase in nonmetallic character. Looking at the electronic configurations, as effective nuclear charge increases, the atom becomes smaller and the attractive force between the nucleus and the outermost electrons increases. Hence, the radius of the atom decreases and ionization energy increases. Note that the addition of more orbital electrons implies addition of more nuclear charge since the both must exactly balance for the atom to remain electrically neutral. The more the electrons in the outermost shell, the higher the first ionization energy.

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43 moles feci3 are dissolved in 0.64l of solution what is the molarity of the solution
nasty-shy [4]
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sergejj [24]
Google said

How many electrons fit in each shell around an atom?

The maximum number of electrons that can occupy a specific energy level can be found using the following formula:

Electron Capacity = 2n2

The variable n represents the Principal Quantum Number, the number of the energy level in question.

Energy Level
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1 K 2
2 L 8
3 M 18
4 N 32
5 O 50
6 P 72
Keep in mind that an energy level need not be completely filled before electrons begin to fill the next level. You should always use the Periodic Table of Elements to check an element's electron configuration table if you need to know exactly how many electrons are in each level.
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makkiz [27]
8.0g's of water is your answer
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