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Posted: **Thu Jul 14, 2022 2:38 pm**

: 12 8 A Spherical Weather Balloon Of 2 M Diameter Is Filled With Hydrogen The Total Mass Of The Balloon Skin And The Ins 1 (37.58 KiB) Viewed 35 times

12.8 A spherical weather balloon of 2 m diameter is filled with hydrogen. The total mass of the balloon skin and the instruments it carries is 29.682 kg. If at a certain altitude the density of air is 1.0 kg m−3 and is ten times the density of hydrogen in the balloon, determine the steady upward
velocity of the balloon. Take viscosity of air to be 1.8×10−5 Nsm−2. [0.932 m s−1]