Answer:
What are the given expressions??
Step-by-step explanation:
Since I can't see you're options, I'll just give you an answer that'll hopefully help...
5³ = 125
Hope that helps you!! :)
Answer:
D) 4 1/2
Step-by-step explanation:
Hope that helps :)
Answer:
9, 12
Step-by-step explanation:
Just multiply the 3,4,5 triple by 3 and u get 9, 12, 15
Answer:
What do you mean there is not a graph...do you have a picture?
Step-by-step explanation:
Answer:
0.049168726 light-years
Step-by-step explanation:
The apparent brightness of a star is
where
<em>L = luminosity of the star (related to the Sun)
</em>
<em>d = distance in ly (light-years)
</em>
The luminosity of Alpha Centauri A is 1.519 and its distance is 4.37 ly.
Hence the apparent brightness of Alpha Centauri A is
According to the inverse square law for light intensity
where
light intensity at distance
light intensity at distance
Let
be the distance we would have to place the 50-watt bulb, then replacing in the formula
Remark: It is worth noticing that Alpha Centauri A, though is the nearest star to the Sun, is not visible to the naked eye.