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Ivanshal [37]
3 years ago
13

Which sequence shows electromagnetic waves arranged from shorter to longer wavelengths?. A. visible light, infrared radiation, m

icrowaves, and ultraviolet rays. B.infrared radiation, Visible light,ultraviolet rays, microwaves. C. Microwaves, infrared radiation,visible light, ultraviolet rays. D.ultraviolet rays, visible light, infrared radiation, microwaves.
Physics
2 answers:
Doss [256]3 years ago
6 0

Answer:

the answer is d

Explanation:

joja [24]3 years ago
5 0

Answer: D.ultraviolet rays, visible light, infrared radiation, microwaves.

Explanation:

Shorter wavelength means higher frequency and higher energy.

Thus, the correct sequence of electromagnetic waves from shorter wavelength to longer wavelength is:

D.ultraviolet rays, visible light, infrared radiation, microwaves.

<u>Ultraviolet rays have shorter wavelength (about 380 nm) and high energy. </u>

<u>Visible light has wavelength: 380 nm to 700 nm</u>

<u>Infrared wavelength: 700 nm to 1 mm</u>

<u>Microwave wavelength: 1 mm to 1 m</u>

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Answer:

I think C

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{C - V}.

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2 years ago
Light of wavelength 500 nm is incident perpendicularly from air on a film 10-4cm thick and of refractive index 1.375. Part of th
Marysya12 [62]

Answer

given,

wavelength (λ)= 500 n m

thickness of film= 10⁻⁴ cm

refractive index = μ = 1.375

distance traveled is double which is equal to 2 x 10⁻⁴ cm

a) Number of wave

     N = \dfrac{d}{\mu\lambda}

     N = \dfrac{2 \times 10^{-6}}{1.375\times 500 \times 10^{-9}}

           N = 2.91

           N = 3

b) phase difference is equal to

Reflection from the first surface has a 180° (½λ) phase change.

There is no phase change for the 2nd surface reflection and there is no phase difference for the 2nd wave having traveled an exact whole number of waves.

net phase difference = 180^0\times \dfrac{3}{2}

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3 years ago
Q:Why does a sheet of sandpaper become warm when you rub it against a wooden board?
otez555 [7]

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A spring has a spring constant of 90N/m.How much potential energy does it store when stretched by 2 cm?
il63 [147K]

Answer:

The potential energy stored in the spring is 0.018 J.

Explanation:

Given;

spring constant, k = 90 N/m

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The potential energy stored in the spring is calculated as;

U = ¹/₂kx²

where;

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Substitute the given values in the equation above;

U = ¹/₂  x  90 N/m  x  (0.02 m)²

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Therefore, the  potential energy stored in the spring is 0.018 J.

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3 years ago
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