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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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3 years ago
What is the mass of an object that has a density of 0.500 g/cm3 and a volume of 5.00 mL?
attashe74 [19]

Answer:

<h2>The answer is 2.5 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

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density = 0.5 g/cm³

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volume = 5 cm³

The mass is

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We have the final answer as

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4 0
3 years ago
Balancing Chemical Equation<br> C=H2=CH4
svlad2 [7]

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Hope this helps.

4 0
2 years ago
As a sodium atom is oxidized the number of protons in its nucleus
lara31 [8.8K]

Answer:

The proton remains the same.

Explanation:

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Oxidation is strictly on the transfer of electron(s) and not proton.

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6 0
3 years ago
If exactly 59.6 g of nitrogen gas is needed to inflate your air bag to the
Inga [223]

Answer:

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Step 5: Calculate mass NaN3

Mass NaN3 = Moles NaN3 * molar mass NaN3

Mass NaN3 = 1.42 moles * 65.0 g/mol

Mass NaN3 = 92.3 grams

We need 92.3 grams of sodium azide

7 0
3 years ago
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