Drag measurements were taken for a sphere, with a diameter of 5 cm, moving at 4 m/s in w...

Drag measurements were taken for a sphere, with a diameter of 5 cm, moving at 4 m/s in water at 20 °C. The resulting drag on the sphere was 10 N. For a balloon with 1-m diameter rising in air with standard temperature and pressure, determine (a) the velocity if Reynolds number similarity is enforced and (b) the drag force if the drag coefficient (Eq. 7.16) is the dependent pi term.