A bathysphere used for deep-sea exploration has a radius of 1.50 m and a mass of 1.20 X 104 kg. To dive, this submarine takes on mass in the form of seawater. Determine the amount of mass the submarine must take on if it is to descend at a constant speed of 1.20 m/s, when the resistive force on it is 1 100 N in the upward direction. The density of seawater is 1.03 X 103 kg/m3.