Answer:
An arcsecond, also called a second of an arc, is a unit of measurement that amounts to one sixtieth of an arcminute. Simply put, it is equal to 1/3600 degrees of an arc. The symbol used to mark an arcsecond is the double quote.
Explanation:
Answer:
The magnetic stripes might reverse direction. The deep-ocean trench might become deeper.
Explanation:
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No. Sorry. A sound wave is a mechanical wave. There's nothing electromagnetic about it.
Answer:
Explanation:
Distance = 50 m
1. To find the average speed, first start the stop watch as the sprinter starts running and then stop it when he reaches the finish line.
Now note the time taken by the sprinter to run for 50 m.
The average speed of the sprinter is defined as the ratio of total distance covered to the total time taken.
Average speed = total distance / total time
2. To find the instantaneous speed, check the seed of the sprinter as he is at the finish line.
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Answer: A</h2>
Explanation because the distance covered is equal time intervals is the same or equal.
