We can actually see that the following point in the passage shows where the author begins a flashback: It all started three weeks ago when Lillian was at Skye's house and Skye mentioned she played the guitar.
<h3>What is flashback?</h3>
Flashback actually refers to a scene in a story or movie that takes the readers or viewers back to an event that happened in the past. Flashback helps the reader or audience to know certain events that took place which weren't visible in the story.
Thus, we see that the author beginning the selected sentence with "It all started three weeks ago,..."
This actually shows it is a flashback.
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It follows that: The gravitational force decreased to F.thus, option B is correct.
Twin satellites that were 150 meters apart when they were launched are now 300 meters apart.
The gravitational force is as follows when the satellites are 150 meters apart:
F= g× m1m2/(150m)₂
Similar to this, the gravitational pull is as follows when the satellites are 300 meters apart:
F= g ˣ m1m2/(300m)₂..........(1)
based on eq (1) and (2)
Fe/ F'e= 4...........(2)
F'e= F c/4
As a result, there is a 1/4 reduction in the gravitational attraction between the twin satellites.
Thus, the appropriate choice is (b).
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