Question

If the average human life span were of the order 10^4 s, what would be the revolution period of earth on this scale be??

Answer 1

Answer:

Revolution period of earth / average human life span is calculated to be 107 /109 = 10-2, as 107 and 109 are the orders of magnitude.

New revolution period of earth is -10-2 x 104 = 102.

Thus, new revolution period of earth is calculated from the average human life span.