A sphere made of rubber has a density of 1. 12 g/cm3 and a radius of 7. 50 cm. It falls through air of density 1. 20 kg/m3 and has a drag coefficient of 0. 500. What is its terminal speed (in m/s)?.

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.