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3 years ago

How do you work out the cross sectional area of a wire?

Physics

1 answer:

Alborosie3 years ago

8 0

For the xsectional area it's pi r squared. The other formula is for the volume of a cylinder. Which is what the wire is, a long cylinder. I can't remember the resistivity formula to hand,
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pi x r^2 is the formula for the cross sectional area of the wire.the other formula is for the volume of a cylinder. Though I can't remember the formula for resistivity off my noggin, the wire is, effectively, a long cylinder isn't it ???

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Answer:

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3 years ago

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Katena32 [7]

Answer:

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4 years ago

A spring has a spring constant of 100 N/m, and the mass hanging from is is 0.71 kg. What is the period of the spring's motion?

Anuta_ua [19.1K]

k = spring constant of the spring = 100 N/m

m = mass hanging from the spring = 0.71 kg

T = Time period of the spring's motion = ?

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3 years ago

Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y

AnnyKZ [126]

The wavelength of the interfering waves is 3.14 m.

<h3>Calculation:</h3>

The general equation of a standing wave is given by:

y = 2A sin (kx) cos (ωt) ......(1)

The given equation represents the standing wave produced by the interference of two harmonic waves:

y = 3 sin (2x) cos 5t .......(2)

Comparing equations (1) and (2):

k = 2

We know that,

k = 2π/λ

λ = 2π/k

λ = 2 (3.14)/ 2

λ = 3.14 m

Therefore, the wavelength of the interfering waves is 3.14 m.

I understand the question you are looking for is this:

Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 3 sin (2x) cos 5t where x is in m and t is in s. What is the wavelength of the interfering waves?

Learn more about interfering waves here:

brainly.com/question/2910205

#SPJ4

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2 years ago