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Artyom0805 [142]
3 years ago
5

What is the name of the are seperating the two koreas?

Geography
1 answer:
IrinaK [193]3 years ago
6 0
Pretty sure its called the 38th Parallel, or the Demilitarized Zone. :)
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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
Great circle are useful for planning airplane routes because
r-ruslan [8.4K]

Answer:

this is useful because they represent the shortest distance between two points on a sphere.

Explanation:

Due to the earth's rotation, sailors and pilots using great circle routes must constantly adjust their route as the heading changes over long distances.

<h2><em>andres1000</em></h2>
6 0
3 years ago
Which is capital of usa
Ratling [72]

Hello!

The capital of the United States of America is Washington D.C. Washington D.C. is located on the east coast, bordering between Maryland and Virginia. It's a very compact city.

6 0
3 years ago
WILL MARK BRAINLIEST IF CORRECT
andreev551 [17]

Answer:

at a Transform Boundary

Explanation:

3 0
2 years ago
Read 2 more answers
Which Supreme Court decision did Brown versus Board of Education 1954 overturn
natita [175]

Answer:

The decision of "racial segregation in public school" did Brown versus Board of education 1954 overturn.

Explanation:

The well known supreme court case in 1954 of Brown versus Board of Education of Topeka in which the justices had taken control unanimously over the racial segregation of children in the public school are completely unconstitutional. The brown versus Board of Education is the biggest milestone of the civil rights movement, which has helped to establish the precedents that are being "separate-but-equal" education rights and other services are not equal at all.

7 0
3 years ago
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