(Answered) 1 a large tank of water is full and has a depth of 100 m

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1. A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank? What would the velocity of the water be if the tank was opened at the bottom?

2. A Two balloons of identical volume (radius 11.5 m) are filled with gas. The first with helium and the second with hydrogen (H²) gas. Each balloon and cage has a mass of 750 kg. What is the lift created by each one? Which one lifts better?

3. A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal?

4. If water leaves a tank of water at a velocity of 16.7 m/s, how tall is the tank?

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