An aluminum sphere (specific gravity = 2.70) falling through water reaches a terminal speed of 4.58 cm/s. what is the terminal speed of an air bubble of the same radius rising through water? assume viscous drag in both cases and ignore the possibility of changes in size or shape of the air bubble; density of air at 20°c is 1.20 kg/m3 and that of water is 998.21 kg/m3.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.