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Naily [24]
3 years ago
11

What are Radio Waves?

Physics
2 answers:
masha68 [24]3 years ago
6 0

Answer: Radio waves are invisible rays that only radio telescopes can detect.

AfilCa [17]3 years ago
5 0
Radio waves are electromagnetic waves with wavelengths of 1 millimeter or more . . . frequencies of 300 GHz or less.
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Answer:

12 m/s west

Explanation:

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The Doppler effect refers to the frequency as perceived by _________. A. the source of the waves B. an observer of the waves who
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The answer you are looking for is B, hope this helps.
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3 years ago
star a and star b have measured stellar parallax of 0.58 arc second and 0.73 arc second, respectively. which star is closer?
goldenfox [79]

Star B is closer than star A, because 1/ 0.58 = 1.72 pc, while 1/.73 = 1.36 pc.

<h3>What is stellar parallax and distance measurement using stellar parallax?</h3>

To calculate the distances to nearby stars, astronomers employ a phenomenon known as parallax. The apparent displacement of an object due to a change in the viewer's point of view is known as parallax. The distances between close stars can be calculated using this phenomenon. A nearer star will seem to move against the farther-off background stars as the Earth revolves around the Sun. By measuring a star's position once, then again six months later, astronomers can establish the apparent shift in location of that star. The apparent motion of the star is referred to as stellar parallax.

A straightforward correlation exists between the distance of a star and parallax angle:

d=\frac{1}{p}

The distance d and parallax angle p are both measured in parsecs and arcseconds, respectively.

Stellar parallax of star A= 0.58 arcseconds

Stellar parallax of star B= 0.73 arcseconds

So, on applying the formula,

The distance of the star A= 1.72pc

And the distance of the star B= 1.36pc

Therefore, star B is closer than star A.

To know more about stellar parallax, visit:

brainly.com/question/29352944

#SPJ4

3 0
1 year ago
Which statement about ocean surface currents is false?
Alla [95]

A) they have no effect on air temperature over land on the coast is False

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  • the temperature over the land increases when warm ocean currents heat the air above the ocean.
  • the temperature over the land decreases when cold ocean currents cool the air above the ocean and can bring colder winds to the coastal regions.
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What is matter that is composed of more than one substance
Juliette [100K]
Compounds are made up of more than 1 type of atom
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3 years ago
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