Question

If it takes $31536000$ seconds for the earth to complete one revolution, how many hours will it take to complete $100$ revolutions? Express the answer in standard form.

Answer 1

Hint: Given the time in seconds. We need to calculate the number of hours. As we know, there are $3600$ seconds in one hour. So, we need to calculate the number of hours by dividing the given seconds with $3600$. We will get the number of hours for one revolution. We will get the number of hours for $100$ revolutions by multiplying with $100$.

Complete answer:
Given: Time $= 31536000$ seconds
It is given in seconds. We need to find the number of hours.
We will divide the given seconds with $3600$.
We will get time in hours.
Time (in hours) $ = \dfrac{31536000}{3600}$
$=8760$ hours.
Number of hours required for completing one revolution is $8760$ hours.
We will need to calculate hours for completing $100$ revolutions.
Required hours is equal to $100$ times the number of hours required for complete one revolution.
Number of hours $=8760 \times 100$
$=876000$ hours.

Note: However, in many areas like astronomy and its associated subjects, revolution is introduced as an orbital revolution. It is utilized when one body passes around another, while rotation is utilized to mean the motion about the axis. For example, the Moon rotates around the Earth and the Earth orbits around the Sun.