So the frequency is f =10 cycles / 120 s = 0.0833 cycles/s. Answer: D. Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second. In this case, there are 10 cycles per 2 minutes (also known as 10 cycles per 120 seconds).
From the scientific viewpoint, the Earth would have had to form about 4.54 billion years since the earliest material in the solar system is dated back to about this time period.
How long does it take the Earth to make one revolution? Quick Answer. Earth completes one revolution around the Sun for every 365.242199 times it rotates on its axis. This figure is, unfortunately, not evenly divisible, which has historically caused difficulties for the creators of various calendars.