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kirill115 [55]
2 years ago
7

two springs have different spring constants how could you identify the spring with the greater spring constant value

Physics
1 answer:
Liula [17]2 years ago
7 0
The answer is B, It will be stiffer
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suppose that 273 g of one of the substances listed above displaces 26 mL of water. What is the substance?
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Light of wavelength 425.0 nm in air falls at normal incidence on an oil film that is 850.0 nm thick. The oil is floating on a wa
creativ13 [48]

Answer:

in oil film        λ = 303.57 10⁻⁹ m

in the water film    λ = 319.55 10⁻⁹ m

Explanation:

When electromagnetic radiation reaches a material, its propagation is by a process that we call absorption and reflection,

when light reaches a surface it has a mass much greater than the mass of the photons (m = 0), therefore there is an elastic collision where the frequency does not change, due to the speed of light in the material medium changes, therefore the only possibility is that the wavelength in the material changes, to maintain the relationship

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we divide the two expression

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the refractive index is

             

              n = c / v

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in the water film

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            λ = 319.55 10⁻⁹

those wavelengths are in the ultraviolet

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Answer:

C is correct.

Explanation:

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