A bathysphere used for deep-sea exploration has a radius of 1.50 m and a mass of 1.19 x 104 kg. In order to dive, this submarine takes on mass in the form of sea water. Determine the amount of mass that the submarine must take on if it is to descend at a constant speed of 1.40 m/s, when the resistive force on it is 1105 N in the upward direction. Take 1.03x 103 kg/m3 as the density of seawater.