The brightness of a star depends on its (color, composition of atmosphere, or distance from earth), and stars that are closer lo
ok (brighter, dimmer, or white).
2 answers:
Answer:
Distance, Brighter
Explanation:
Think of a flash light, one close and one far which is brighter and which is dimmer.
Hope this is what your teacher put as the answer!
Answer:
Distance, brighter
Explanation:
Brightness depends upon the amount of power that is radiated by a star
This in turn follows the inverse square law. That is, as the distance from the object increases, brightness decreases as the square of the distance.
Color depends on the composition of the star's radiation.
When the stars are bright, it can be understood that they are closer, compared to other stars.
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If the light were incident upon two polarizers at right angles, no light would get thru - thus each polarizer must block 50% of the light.
One polarizer would allow 50% of the light to pass.
Answer:
limitations of the measuring instrument.
Explanation:
Hope this helps
Answer:
Explanation:
Let the tension in the string be T . At the top of the circle , total force acting on them = T + mg . This will provide centripetal force
T + mg = m v² / r
4 + .25 x 9.8 = .25 x v² / .62
6.45 = .25 v² / .62
v² = 16
v = 4 m /s .
If n=1 you divide by 2
If n=2 you divide by 4
If n=3 you divide by 8
so any n you divide by 2 to the power n
