Q. One cubic centimeter of a cumulus contains 250 water drops, which have a typical radius of 10 μm. (a) How various cubic meters of water are in a cylindrical cumulus cloud of height 3.0 km and radius 1.1km? (b) How various 1-liter pop bottles would that water fill? (c) Water has a density of 1000 kg/m3. How much mass does the water in the cloud have?
Q. A person of mass 72 stands at the center of a rotating merry-go-round platform of radius 3.40 and moment of inertia 950. The platform rotates without friction with the angular velocity 0.95. The person walks radially to the edge of the platform.