S=4\pi r^{2} Solve for r[/tex]
1 answer:
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Answer:
12 years will it take for light from the star to reach Earth.
Step-by-step explanation:
As per the given statement: A certain star is 1.135 × 10^14 km away from Earth. If light travels at 9.4607 × 10^12 km per year.
⇒Speed of light travel = km per year
and Distance of a certain star from the Earth = km
To find how long will it take for light from the star to reach Earth.
Using Formula:
or
Substitute the given values we have;;
Simplify:
Time = 11.9969981 year ≈ 12 years
therefore, 12 years will it take for light from the star to reach Earth.
Answer:
10 times
Step-by-step explanation:
Since the leftmost value is called ones place.
the second leftmost value is called tens place.
the third leftmost value is called a hundred place.
the fourth leftmost value is called a thousand place and so on.
So, The value of 4 in 4,735 is 4 thousand = 4,000
and the value of 4 in 6,412 is 4 hundred = 400.
Hence, the value of the 4 in 4,735 is 10 times the value of the 4 in 6,412.
