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artcher [175]
3 years ago
10

The Hubble constant, $H_{0}$, is the ratio of the recessional velocity of a galaxy to its distance. The Hubble constant is estim

ated to be 70 km/sec per million parsecs of distance. (One parsec is equal to 3.26 light years.) Based on this ratio, how many billions of light years away would a galaxy be if it had a recessional velocity of 300,000 km/sec?
Physics
1 answer:
Sergeeva-Olga [200]3 years ago
5 0

Answer:

14 billion light years away

Explanation:

v = Recessional velocity = 70km/s/million parsec

D = Proper distance

Hubble constant

70\ km/s=3260000\ ly\\\Rightarrow 1\ km/s=\dfrac{3260000}{70}\ ly

From Hubble's law we have the relation

v=H_0D\\\Rightarrow D=\dfrac{v}{H_0}\\\Rightarrow D=\dfrac{3260000}{70}\times 300000}\\\Rightarrow D=13971428571.42857\ ly

The distance in light years of the galaxy is 14 billion light years away

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Answer:

Explanation:

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8 0
2 years ago
A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42 m/s at the end of the catapult
Dvinal [7]

Answer:

Explanation:

Given

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Here initial velocity is zero u=0

acceleration is the rate of change of velocity in a given time

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a=acceleration

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s=0+\0.5\times 21\times (2)^2

s=42\ m

so Jet Plane travels a distance of 42 m in 2 s                                

5 0
3 years ago
To the nearest tenth, what is the area of the shaded segment when JA=8ft ??
Murrr4er [49]
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7 0
3 years ago
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NeTakaya

Answer:

i think it  d

Explanation:

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Nikitich [7]

Answer:

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Explanation:

I hope this is right, I kind of learned this like a year ago

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