A train slows down as it pulls into a station. if the train is moving from your left to your right, what are the directions of t
1 answer:
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Answer:
The duration is
Generally the time it would take for the message to get the the other civilization is mathematically represented as
Here c is the speed of light with the value
=>
=>
converting to years
Now the total time taken is mathematically represented as
=>
=> [tex]T =72 \ years /tex]
Answer:
c) At a distance greater than r
Explanation:
If G= Gravitational constant
M= Mass of earth
r= distance from earth center
then orbital speed is ;
v =
==> v²=GM/r
If speed of first satellite = V₁
==> V₁² = GM/r
==> r = GM/V₁²
If speed of second satellite say V₂ is less than V₁ then square of V₂ will be less than square of V₁ , and hence GM will be divided by less number in case of second satellite, and hence will give greater value of r as compared to first satellite.
So our answer is c