Answer: n represents the amount a stamp cost
Step-by-step explanation:
A(n) is a special type of hyphen that prevents two words separated by a hyphen from splitting at the end of a line.
Answer:
i think 4 is b
Step-by-step explanation:
Answer:
1/5
Step-by-step explanation:
We can find the slope of a line given two points by using the following
m = ( y2-y1)/(x2-x1)
= ( 3-0)/(7 - -8)
= ( 3-0)/(7+8)
= 3/15
= 1/5
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.