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Akimi4 [234]
3 years ago
10

The following electromagnetic radiation is harmful to us

Physics
2 answers:
Andrew [12]3 years ago
8 0

the answer is the Ultraviolet radiation

PROOF : as said that the ozone layer protects us from very harmful ultraviolet radiation THAT CAN DESTROY LIfe on earth :D

please mark me brainliest \( ̄︶ ̄*\))

ANEK [815]3 years ago
3 0

Answer:

4. ultraviolet radiation

Explanation:

because I think uv is more far apart(high wavelength) from the rest so that its energy is higher and it can damage more.

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The ceiling of a large symphony hall is covered with acoustic tiles which have small holes that are 4.35 mm center to center. If
zvonat [6]

Answer:

The distance between their eye and the ceiling is 33.06 m.

Explanation:

Given that,

The ceiling of a large symphony hall is covered with acoustic tiles which have small holes that are 4.35 mm center to center, D = 4.35 mm

Diameter of the eye of pupil, d = 5.1 mm

Wavelength, \lambda=550\ nm

We need to find the distance between their eye and the ceiling. Using Rayleigh criteria, we get the distance as follows :

L=\dfrac{Dd}{1.22\lambda}\\\\L=\dfrac{4.35\times 10^{-3}\times 5.1\times 10^{-3}}{1.22\times 550\times 10^{-9}}\\\\L=33.06\ m

So, the distance between their eye and the ceiling is 33.06 m.

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3 years ago
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The answer is A. the moving charge induces a magnet field .


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muminat

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10 displacement of the runner

6 0
3 years ago
How do fossils provide evidence that evolution has taken place
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<span>Fossils provide solid evidence that organisms from the past are not the same as those found today; they show a progression of evolution. Scientists calculate the age of fossils and categorize them to determine when the organisms lived relative to each other. Hope this helps</span>
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3 years ago
The solid steel shaft AC has a diameter of 25 mm and is supported by smooth bearings at D and E. It is coupled to a motor at C ,
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Answer:

Maximum shear stress in region AB=1.04 MPa

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The explanation is attached in the attachments.

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