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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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Mariulka [41]

Answer:

16.3 ft/s

Explanation:

Let d=distance

and

x = length of shadow.

Therfore,

x=(d + x)

 = 6/15

So,

    15x = 6x + 6d

     9x = 6d.

x = (2/3)d.

As we know that:

dx=dt

   = (2/3) (d/dt) 

Also,

Given:

d(d)=dt

     = 7 ft/s

Thus,

d(d + x)=dt

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Hence,

d(d + x) = 16.3 ft/s.

4 0
3 years ago
The number of electrons an atom would gain or lose when forming ionic bonds. It can be positive, negative or zero.
vaieri [72.5K]

Answer:

<u>In an ionic bond , an element will have to lose or gain electrons.</u>

Explanation:

  • Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
  • Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
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∴

  • <em>The number of electrons an atom would gain or lose when forming ionic bonds cannot be zero.</em>
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