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postnew [5]
3 years ago
5

Light travels as a(n) _______ wave. mechanical compression electromagnetic

Physics
2 answers:
Alex787 [66]3 years ago
8 0

Answer: The correct answer is "electromagnetic wave".

Explanation:

Electromagnetic waves: These waves are produced by vibration of the charged particles. But the mechanical waves are caused by wave amplitude.

Electromagnetic wave does not need a medium while the mechanical wave needs a medium to travel.

The electromagnetic wave travels with the speed of the light. The example of electromagnetic wave is light.

Mechanical waves are of two types: Longitudinal wave and Transverse.

Sound wave is a longitudinal wave. It consists of compression and rarefaction.

Therefore, Light travels as an electromagnetic wave.

Ugo [173]3 years ago
4 0
The correct answer is electromagnetic. Lights travel as an electromagnetic wave. In fact, light is an electromagnetic radiation which has a center of the electromagnetic spectrum. Light is visible to the naked eye, and is responsible for an organism's sense of sight.
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The closest stars are 4 light years away from us. How far away must you be from a 854 kHz radio station with power 50.0 kW for t
Lubov Fominskaja [6]

Answer:

The distance from the radio station is 0.28 light years away.

Solution:

As per the question:

Distance, d = 4 ly

Frequency of the radio station, f = 854 kHz = 854\times 10^{3}\ Hz

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I_{p} = 1\ photon/s/m^{2}

Now,

From the relation:

P = nhf

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h = Planck's constant

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Now,

n = \frac{P}{hf} = \frac{50\times 10^{3}}{6.626\times 10^{- 34}\times 854\times 10^{3}} = 8.836\times 10^{31}\ photons/s

Area of the sphere, A = 4\pi r^{2}

Now,

Suppose the distance from the radio station be 'r' from where the intensity of the photon is 1\ photon/s/m^{2}

I_{p} = \frac{n}{A} = \frac{n}{4\pi r^{2}}

1 = \frac{8.836\times 10^{31}}{4\pi r^{2}}

r = \sqrt{\frac{8.836\times 10^{31}}{4\pi}} = 2.65\times 10^{15}\ m

Now,

We know that:

1 ly = 9.4607\times 10^{15}\ m

Thus

r = \frac{2.65\times 10^{15}}{9.4607\times 10^{15}} = 0.28\ ly

5 0
3 years ago
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faust18 [17]

Answer:

50 N

Explanation:

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I hope this helps! :)

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2 years ago
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Lady_Fox [76]

Answer:

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3 years ago
Explain integration and differentiation in simple method!
Anika [276]
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the answer is ( True ) .

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