a WBallon A ball of mass m is held under the surface of a pool. The instant it is released, it has a downward acceleration of 5m/s toward the bottom of the pool. What is the density of the ball? (g = 10 m/s*, pwater = 1000 kg/m³) %3D
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- Water flows through a small horizontal pipe with a speed of 12 m/s into a larger part of the pipe for which the diameter of the pipe is doubled. What is the speed of the water in the larger part of the pipe? a. 0.75 m/s b. 3.0 m/s c. 6.0 m/s d. 12 m/sA 1mm diameter glass bread is dropped into a cylinder of oil at room temperature. It falls 25 cm to the bottom in 60s at constant speed. The glass and oil have densities of 2500 kg/m^3 and 900 kg/m^3, respectively. A. What is the mass of the bead? B. What is the viscosity of the oil? C. Would you expect the time fall to increase, decrease, or remain the same if the oil was heated up first?A 60 kg hot-air balloon carrie a person of 50 kg. The balloon and the person move at an upward acceleration of 1.75 m/s^2. What is the buoyant force on the system in SI base units? Other 588 O 110 O 1078 O 1270.5 As a balloon designer, what is the minimum volume of the hot-air balloon you need to make that possible? Use SI base units Other O 90 O 106 O 74
- A ball with a mass of 2000 g is floating on the surface of a pool of water. What is the minimum volume that the ball could have without sinking below the surface of the water? (Note that water has a density of 1.00 g/cm³.) A. 2 cm³ B. 1000 cm³ C. 2000 cm³ D. 9.8 cm³ 4The density of ice is 917 kg/m³, and the density of sea water is 1025 kg/m³. A swimming polar bear climbs onto a piece of floating ice that has a volume of 6.02 m³. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water? Number i UnitsSome species of whales can dive to depths of one kilometer. What is the total pressure they experience at this depth? (osea- 1020 kg/m3 and 1.01 x 105 N/m2-1 atm.) a. 9.00 atm b. 90.0 atm c. 100 atm d. 111 atm e. 130 atm
- q2A flat-bottomed aluminum fishing boat has a mass of 60 kg and an area of 4.0 m2. When it is launched into the water (density 1,000 kg/m3), how far (in m) below the surface of the water does the bottom of the boat sink? B. A fisherman and his buddy climb into the boat. If they, along with their gear, have a mass of 300 kg, how much farther (in m) does the boat sink into the water?