I think you can google this because I really don’t know the answer I’m so sorry
Do they give answer choices? or is it free write? i’ll help if you tell me!!
The speed of the spaceship relative to the galaxy is 0.99999995c.
A light-year measures distance rather than time (as the name might imply). A light-year is a distance a light beam travels in one year on Earth, which is roughly 6 trillion miles (9.7 trillion kilometers). One light-year equals 5,878,625,370,000 miles. Light moves at a speed of 670,616,629 mph (1,079,252,849 km/h) in a vacuum.We multiply this speed by the number of hours in a year to calculate the distance of a light-year (8,766).
The Milky way galaxy is 100,000 light years in diameter.
The galaxy's diameter is a mere 1. 0 ly.
We know that ;
![L = L_0 \sqrt{1-\frac{v^2}{c^2} }](https://tex.z-dn.net/?f=L%20%3D%20L_0%20%5Csqrt%7B1-%5Cfrac%7Bv%5E2%7D%7Bc%5E2%7D%20%7D)
L = 1 light year
L₀ = 100,000 light year
![1 = 100,000 \sqrt{1-\frac{v^2}{c^2} }](https://tex.z-dn.net/?f=1%20%3D%20100%2C000%20%5Csqrt%7B1-%5Cfrac%7Bv%5E2%7D%7Bc%5E2%7D%20%7D)
![1 = 100,000 \sqrt{1-\frac{v^2}{(3*10^8)^2} }](https://tex.z-dn.net/?f=1%20%3D%20100%2C000%20%5Csqrt%7B1-%5Cfrac%7Bv%5E2%7D%7B%283%2A10%5E8%29%5E2%7D%20%7D)
![\frac{1}{100,000} = \sqrt{1-\frac{v^2}{c^2} }](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B100%2C000%7D%20%20%3D%20%5Csqrt%7B1-%5Cfrac%7Bv%5E2%7D%7Bc%5E2%7D%20%7D)
![c](https://tex.z-dn.net/?f=c)
Therefore, the speed of the spaceship relative to the galaxy is 0.99999995c.
Learn more about a light year here:
brainly.com/question/17423632
#SPJ4
No they don't. Incident rays parallel to the axis of a concave mirror
reflect from the mirror's surface and converge at its focal point.
Answer:
Explained
Explanation:
Michelson contrast is used for patterns where the distribution of bright and dark segments is nearly equal.
It is given by:
![m= \frac{I_{max}-I{min}}{I_{max}+I{min} }](https://tex.z-dn.net/?f=m%3D%20%5Cfrac%7BI_%7Bmax%7D-I%7Bmin%7D%7D%7BI_%7Bmax%7D%2BI%7Bmin%7D%20%7D)
where I_max = maximum illumination and I_min = minimum illumination
we know that
typically, I_min = 54% of I_max (general standard)
or I_min = 0.54 I_max
putting this value in above equation to get m
this approximately corresponds to m = 0.3 or 30%
hence, 30% recommended as the minimum Michelson contrast