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2 years ago

HELP BRAINLYEST TO CORRECT ANSWER

Physics

2 answers:

Andrei [34K]2 years ago

4 0

Answer:

Thickness is a physical property without any relation with chemical composition or chemical changes.

kow [346]2 years ago

3 0

Answer:

physical

Explanation:

how thick something is is a physical trait, so it's a physical property!

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Jobisdone [24]

Answer:

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Explanation:

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2 years ago

A heater is being designed that uses a coil of 14-gauge nichrome wire to generate 300 W using a voltage of V = 110 V . How long

Mazyrski [523]

Answer:

The length of the wire is 83.2 m.

Explanation:

Given that,

Power of heater, P = 300 W

Voltage, V = 110 V

The resistivity of nichrome wire is, $\rho=100\times 10^{-8}\ \Omega-m$

The electric power of a wire is given by :

$P=\dfrac{V^2}{R}\\\\R=\dfrac{V^2}{P}\\\\R=\dfrac{(110)^2}{300}\\\\R=40.34\ \Omega$

Area of cross section of the wire is :

$A=\pi r^2\\\\A=\pi (0.000815)^2\\\\A=2.08\times 10^{-6}\ m^2$

Resistance of a material is given by :

$R=\rho \dfrac{L}{A}\\\\L=\dfrac{RA}{\rho}\\\\L=\dfrac{40\times 2.08\times 10^{-6}}{10^{-6}}\\\\L=83.2\ m$

So, the length of the wire is 83.2 m. Hence, this is the required solution.

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3 years ago

an electrical generator is an important component in a power plant. which best shows the energy transfer diagram for a generator

Evgen [1.6K]

Answer:The answer is B

Explanation:

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2 years ago

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Andre45 [30]

Answer:

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u = Initial velocity = 0

v = Final velocity

m = Mass

t = Time taken

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