Exam 11: Static Fluids

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A piece of aluminum with a mass of 1.0 kg and density of 2700 kg/m3 is suspended from a light cord and then completely immersed in a container of water having density 1000 kg/m3. (a)Determine the volume of the piece of aluminum. (b)Determine the tension in the cord when the aluminum is immersed in the container of water.

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An object has a volume of 4.0 m3 and weighs 40,000 N.What will its apparent weight be in water of density 1000 kg/m3 (apparent weight is the reading of a scale which supports the object)

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A solid object floats in water with three-fourths of its volume beneath the surface.What is the object's density? The density of water is 1000 kg/m3.

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A container has a vertical tube,whose inner radius is 20.00 mm,connected to it at its side,as shown in the figure.An unknown liquid reaches level A in the container and level B in the tube-level A being 5.0 cm higher than level B.The liquid supports a 20-cm high column of oil,between levels B and C,whose density is 900 kg/m3900 \mathrm {~kg} / \mathrm { m } ^ { 3 } The density of the unknown liquid is closest to  A container has a vertical tube,whose inner radius is 20.00 mm,connected to it at its side,as shown in the figure.An unknown liquid reaches level A in the container and level B in the tube-level A being 5.0 cm higher than level B.The liquid supports a 20-cm high column of oil,between levels B and C,whose density is  900 \mathrm {~kg} / \mathrm { m } ^ { 3 }  The density of the unknown liquid is closest to

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A 500-N object sits on the small piston of a hydraulic machine.The small piston has an area of 2.0 cm2.If the large piston has an area of 40 cm2,how much weight can the large piston support? Assume the pistons each have negligible weight.

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