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Ksju [112]
3 years ago
12

The distance between exoplanets and planet Earth is measured in ________.

Geography
2 answers:
9966 [12]3 years ago
4 0
The distance between exo-planets and planet earth is measured in Light years, all other units are quite small, so they are inconvenient.
eimsori [14]3 years ago
3 0
Light years? Since I believe that light years are the most common measurement in space i imagine that would be correct
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At higher elevations, the boiling point of water decreases, due to the decrease in atmospheric pressure. As a result, what
11Alexandr11 [23.1K]

b. At higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point,  so the egg is boiling in water at a lower temperature.

Explanation:

The best answer from the given choices is that, at higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point, so the egg is boiling in water at a lower temperature.

  • Boiling point is simply the pressure at which the vapor pressure of a liquid is equal to the atmospheric pressure.
  • At higher elevations, the atmospheric pressure is low and it would require little heat to boil water and turn it into vapor.
  • To hard boil an egg, we need elevated temperature.
  • But since water to use hard boiling has an unusually low temperature, it becomes more difficult since much of the water turns into vapor.
  • This is why at higher elevations, it takes a longer time to hard boil eggs.

learn more:

Boiling point brainly.com/question/9529654

#learnwithBrainly

7 0
3 years ago
it is possible for two stars to have different temperatures and different sizes but the same luminosity. explain how.
Darina [25.2K]

Answer:

Two stars (a and b) can have the same luminosity, but different surface area and temperature if the following condition is met:

(T_a^4)(R_a^2) = (T_b^4)(R_b^2)

Explanation:

The luminosity of a star is the total energy that produces in one second. It depends on the size of the star and its surface temperature.

L = σ(T^4)(4πR^2)

L is the luminosity f the star, T is the temperature of the surface of the star and R is its radius.  

Two stars can have the same luminosity if the relation between the radius and the surface temperature is maintained.  

To see this lets suposed you have 2 stars, a and b, and the luminosities of each one of them:

L_a = σ(T_a^4)(4πR_a^2)

L_b = σ(T_b^4)(4πR_b^2)

you can assume that L_a and L_b are equal:

σ(T_a^4)(4πR_a^2) = σ(T_b^4)(4πR_b^2)

Now, you can cancel the constants:

(T_a^4)(R_a^2) = (T_b^4)(R_b^2)

as long as this relation between a and b is true, then the luminosity can be the same.

6 0
3 years ago
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skelet666 [1.2K]
Submarine Canyon

Submarine Canyon's are steep-sided valley canyons cut into the seabed of the continental slope. 
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3 years ago
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1. the moon is always half illuminated by....
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1) sun
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Explanation: I hope this is correct but if not sorry
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Answer:

1.to protect people to any virus and to look attractive

2. to maitain a good system and good condition

3.on the cleaniest place and have good air

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