Riots for economic opportunities in North Africa were called the?
1 answer:
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<u>Answer:</u>
There will be more stars than that we have counted last time.
<u>Explanation:</u>
- Considering our galaxy star is formed daily. Speed that the star formed is greater than the speed to count them by human.
- It is estimated that there are about
star in our galaxy.
- Even if we count the star to a specific place than will in big number, also there are about 400 million of star is born daily taking about the specific it will be smaller compared to the total but that will still be big number.
Answer: 100Mpc
Explanation:
Hubble deduced that the farther the galaxy is, the more redshifted it is in its spectrum, and noted that all galaxies are "moving away from each other with a speed that increases with distance", and enunciated the now called Hubble–Lemaître Law.
This is mathematically expressed as:
(1)
Where:
is the approximate recession velocity of the galaxy
is the Hubble constant
is the distance
Now, we have two galaxies A and B ande we know the following:
Galaxy A has a velocity twice that of galaxy B
(2)
Galaxy A is 200 Mpc away
(3)
According to Hubble Law:
(4)
(5)
Substituting (2) in (5):
(6)
(7)
(8)
If (9)
(10)
Substituting (8) in (11):
(11)
Finally: