Answer: I would choose options C and D
Explanation:
Answer:
1. The lowest stratum of the atmosphere
troposphere
2. Most of the earth's ozone is located in the
stratosphere
3. Earth coldest temperature occur in the
mesosphere
Explanation:
So that international people don't mistake units for others. ex 1 inch could be mistaken for 1 cm in non American countries
As per angular momentum conservation we can say

here we know that

we know that




now from above equation



so speed is 4.4 m/s