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atroni [7]
2 years ago
12

If length of wire is doubled keeping the diameter constant ,its Youngs modulus will be​

Physics
1 answer:
Luda [366]2 years ago
3 0

Answer:

Y = Stress / Strain = (F / A) / (l / L)   where l is the change in length

Since L is doubled and A remains the same one would expect l, the change in length to also double so Y remains the same.

As an example think of hanging a weight from a spring and the same weight from a similar spring of twice the length - one would expect the longer spring to show twice the extension of the shorter spring.

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maxonik [38]
For fundamental frequency of a string to occur, the length of the string has to be half the wavelength. That is,

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Therefore,
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Additionally,
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Then,
v = y*f = 1.5*220 = 330 m/s
4 0
3 years ago
In this activity, you will research how scientists developed historical
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  Niels Bohr improved Rutherford's model. Using mathematical ideas, he showed that electrons occupy shells or energy levels around the nucleus. The Dalton model has changed over time because of the discovery of subatomic particles

  Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

  John Dalton

The idea that everything is made of atoms was pioneered by John Dalton (1766-1844) in a book he published in 1808. He is sometimes called the "father" of atomic theory, but judging from this photo on the right "grandfather" might be a better term.

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8 0
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What do microorganisms get from soil? What do microorganisms give to soil?
nikitadnepr [17]

Answer:

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Explanation:

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3 years ago
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If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is
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As the surface given is a smooth surface, we can use specular reflection. According to the law of specular reflection, the angle of incidence equals the angle of reflection, so it will also be 40°. Answer is A.
5 0
3 years ago
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