The average luminance of the Sun is about 1.88 giga candela per square metre, but as viewed through Earth's atmosphere, this is lowered to about 1.44 Gcd/m2. However, the luminance is not constant across the disk of the Sun (limb darkening).

Explanation:

4 0

2 years ago

Suppose that two stars in a binary star system are separated by a distance of 60 million kilometers and are located at a distanc

olya-2409 [2.1K]

Answer:The angular seperation is $\theta =3.6\times 10^{-4}$

Explanation:

For two objects separated by a distance 's' and at a distance 'd' from the observer the angular separation ignoring the physical effects is given by

$\theta =\frac{s}{d}$

In the given question

$s=60\times 10^{6}km$

$d=180$ light years

We know that in 1 light year there are $9.5\times 10^{12}km$

Using the calculated values we get

$\theta =\frac{60\times 10^{6}}{9.5\times 10^{12}}\\\\\theta = 6.315\times10^{-6}radians$

Since π radians equals 180 degrees thus we have

$\\\\\theta =\frac{6.315\times 10^{-6}\times 180}{\pi }degrees=3.6\times 10^{-4}degrees$

8 0

3 years ago

Plsss helppp hurryyy !

Fittoniya [83]

the answer to this question is letter A

7 0

2 years ago