A 16-kg scooter is moving at a speed of 7 m/s. The scooter’s speed doubles. What is the scooter’s kinetic energy when its speed
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Hope this provides some answers
Hey there,
Your question states: <span>How long does it take for light from a star that is 8 light-years away to reach earth?
It take just about (</span>8 earth years) <span> for light from a star that is 8 light-years away to reach earth. That is how </span>
it would take.
Hope this helps.
~Jurgen
Your question states: <span>How long does it take for light from a star that is 8 light-years away to reach earth?
It take just about (</span>8 earth years) <span> for light from a star that is 8 light-years away to reach earth. That is how </span>
Hope this helps.
~Jurgen
Answer:
Time = 6 years
Explanation:
First, we will calculate the no. of half life periods required to reduce the mass of Protactinium to the given value:
where,
n = no. of half-life periods = ?
m = initial mass = 86.3 g
m' = remaining mass = 10.8 g
Therefore,
Since the bases are the same. Therefore equating powers:
n = 3
Now we calculate the time:
<u>Time = 6 years</u>