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djverab [1.8K]
2 years ago
14

The doppler effect helps us know...

Geography
1 answer:
marysya [2.9K]2 years ago
4 0

Answer:

the doppler effect helps us Know....

How far away objects in space are.

Hope You got it!

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What are two cities of latin america that are within a tropical wet climate region?
Sidana [21]
Two cities of latin america that are witin a tropical wet climate region are <span>San Marcos, Colombia and Tucapita, Venezuela.</span>
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3 years ago
Part A Briefly summarize the role of the jovian planets in shaping the orbits of small bodies in the solar system and in influen
Alja [10]

Answer:

Their gravity helps make life possible.

Explanation:

The Jovian planets are also known as gas giants and have had more of an impact on Earth than most Earthlings probably realise. During the formation of the solar system, these planets captured large planetesimals as moons and allowed the inner solar system to form less violently.

The gravitational pull of these massive planets also drew comets laden with ice from the outer reaches of the solar system towards the dry rocky worlds in the center. It was largely due to this slingshot process that Earth received its oceans.

Finally, the Jovian planets protect the inner planets today by deflecting asteroids and comets that might otherwise penetrate into the inner solar system and collide with Earth.

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.

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3 years ago
What volcano is in the middle of a continent
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Arenal Volcano is in the middle of the continent

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25 POINTS!
sertanlavr [38]
Number one is "sand dunes".
Number two is "the breakdown of rock through mechanical disintegration and physical stress."
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