Can you please help me solve these and explain them to me?

NOTE: All numbers must be entered as 5000 or 5e3 or 5.0e3 and not with commas as in "5,000" and not as fractions as in "3/4" and not as percentages as in "70%".

1.Estimate a typical wind speed on Earth (in m/s).

2.Estimate the radius of Earth (in meter).

3. Estimate the height (in meter) of Earth's atmosphere above Earth's surface.

4.Using your estimates above, estimate the volume (in meter³) of Earth's atmosphere.

5. Estimate the density of air (in kg/m³).

6. Using your estimates above, estimate the mass (in kg) of Earth's atmosphere.

7.Estimate the kinetic energy (in joule) of Earth's winds.

8. Estimate the global human energy consumption (in joule/day).

9. Estimate the percentage of humanity's daily energy needs that could be met by capturing the energy in Earth's winds.