A raft of density 700 kg/m3 has a surface area of 7.0 m2 and a volume of 0.7 m3.What depth does it sink into water of density 1000 kg/m3?

A) 10 cm B) 0.7 cm C) 0.7 m D) 7 m E) 7 cm A) 10 cm B) 0.7 cm C) 0.7 m D) 7 m E) 7 cm

A tube with a radius of 4.2 cm is holding oil that has a density of 0.92 g/cm3.The pressure in the oil at a depth of 64 cm from the top of the surface is

A) 5.8 $\times$ 102 Pa B) 5.8 $\times$ 103 Pa C) 1.0 $\times$ 102 Pa D) 1.0 $\times$ 106 Pa E) 1.7 $\times$ 103 Pa A) 5.8 $\times$ 102 Pa B) 5.8 $\times$ 103 Pa C) 1.0 $\times$ 102 Pa D) 1.0 $\times$ 106 Pa E) 1.7 $\times$ 103 Pa

Exam 13: Fluids

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What is the gauge pressure at a depth of 6 cm in a glass filled with 4 cm of mercury and 4 cm of water? Water has a density of 1000 kg/m³,and mercury has a density 13.6 times as great.

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Question 61

Two identical beakers are filled with the same amount of water.A ball of mass m is placed in the first beaker so that it floats on the surface while a second identical ball is placed in the second beaker but tied with a string of negligible mass so that the ball is completely submerged.Each beaker is then placed on a scale.Which scale has a higher reading?

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Question 62

If the gauge pressure is doubled,the absolute pressure is

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Question 63

A raft of density 700 kg/m³ has a surface area of 7.0 m² and a volume of 0.7 m³.What depth does it sink into water of density 1000 kg/m³?

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Question 64

A stone of volume 1.42 $\times$ 10^-2 m³ lies at the bottom of a freshwater lake.If the rock's specific gravity is 3.5,the work required to lift it 1 m through the water is approximately

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Question 65

If the atmosphere were compressed until it had the density of water,it would cover Earth to a depth of about

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Question 66

Pressure as a function of depth for a certain liquid is plotted on the graph.What is the density of the liquid?

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Question 67

Which of the following is the mass density of a material?

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Question 68

A tube with a radius of 4.2 cm is holding oil that has a density of 0.92 g/cm³.The pressure in the oil at a depth of 64 cm from the top of the surface is

(Multiple Choice)

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Question 69

A horizontal pipe of 30 cm² cross-sectional area carries water at a speed of 2.5 m/s.This pipe feeds a smaller pipe of cross section 10 cm².Find the speed of water flow in the smaller pipe.

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Question 70

A fish model that is 5.08 cm in diameter is placed in a pipe 25.4 cm in diameter and aligned along the axis of the pipe.If the water must flow past the fish at 2.44 m/s,the water in the unconstricted part of the pipe must flow at

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Question 71

A rock of mass M with a density twice that of water is sitting on the bottom of an aquarium tank filled with water.The normal force exerted on the rock by the bottom of the tank is

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Question 72

A hurricane strength wind is blowing past a wooden box-shaped shack with its door and windows shut.Which one of the following statements is true?

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Question 73

A beaker is filled with water.A ball of mass m and density $\rho$ < $\rho$ _water is tied to a string.The other end of the string is then tied to the bottom of the beaker so that the ball is completely submerged.What is the tension in the string? $A beaker is filled with water.A ball of mass m and density \rho < \rho <sub>water</sub> is tied to a string.The other end of the string is then tied to the bottom of the beaker so that the ball is completely submerged.What is the tension in the string?$

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Question 74

A rock of mass M,that has a density twice that of water,is suspended in water by a thin,massless cord.The tension in the cord is

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Question 75

Two pistons of a hydraulic lift have radii of 2.67 cm and 20.0 cm.The downward force on the 2.67-cm piston that is required to lift a mass of 2000 kg supported by the 20-cm piston is

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Question 76

For the streamlined flow of a viscous liquid,such as water,in a capillary tube,which of the following is correct?

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Question 77

Showing 61 - 77 of 77

Exam 13: Fluids

What is the gauge pressure at a depth of 6 cm in a glass filled with 4 cm of mercury and 4 cm of water? Water has a density of 1000 kg/m3,and mercury has a density 13.6 times as great.

If the gauge pressure is doubled,the absolute pressure is

A raft of density 700 kg/m3 has a surface area of 7.0 m2 and a volume of 0.7 m3.What depth does it sink into water of density 1000 kg/m3?

A stone of volume 1.42 ×\times× 10-2 m3 lies at the bottom of a freshwater lake.If the rock's specific gravity is 3.5,the work required to lift it 1 m through the water is approximately

If the atmosphere were compressed until it had the density of water,it would cover Earth to a depth of about

Pressure as a function of depth for a certain liquid is plotted on the graph.What is the density of the liquid?

Which of the following is the mass density of a material?

A tube with a radius of 4.2 cm is holding oil that has a density of 0.92 g/cm3.The pressure in the oil at a depth of 64 cm from the top of the surface is

A horizontal pipe of 30 cm2 cross-sectional area carries water at a speed of 2.5 m/s.This pipe feeds a smaller pipe of cross section 10 cm2.Find the speed of water flow in the smaller pipe.

A fish model that is 5.08 cm in diameter is placed in a pipe 25.4 cm in diameter and aligned along the axis of the pipe.If the water must flow past the fish at 2.44 m/s,the water in the unconstricted part of the pipe must flow at

A rock of mass M with a density twice that of water is sitting on the bottom of an aquarium tank filled with water.The normal force exerted on the rock by the bottom of the tank is

A hurricane strength wind is blowing past a wooden box-shaped shack with its door and windows shut.Which one of the following statements is true?

A beaker is filled with water.A ball of mass m and density ρ\rhoρ < ρ\rhoρ water is tied to a string.The other end of the string is then tied to the bottom of the beaker so that the ball is completely submerged.What is the tension in the string?

A rock of mass M,that has a density twice that of water,is suspended in water by a thin,massless cord.The tension in the cord is

Two pistons of a hydraulic lift have radii of 2.67 cm and 20.0 cm.The downward force on the 2.67-cm piston that is required to lift a mass of 2000 kg supported by the 20-cm piston is

For the streamlined flow of a viscous liquid,such as water,in a capillary tube,which of the following is correct?

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What is the gauge pressure at a depth of 6 cm in a glass filled with 4 cm of mercury and 4 cm of water? Water has a density of 1000 kg/m³,and mercury has a density 13.6 times as great.

A raft of density 700 kg/m³ has a surface area of 7.0 m² and a volume of 0.7 m³.What depth does it sink into water of density 1000 kg/m³?

A stone of volume 1.42 $\times$ 10^-2 m³ lies at the bottom of a freshwater lake.If the rock's specific gravity is 3.5,the work required to lift it 1 m through the water is approximately

A tube with a radius of 4.2 cm is holding oil that has a density of 0.92 g/cm³.The pressure in the oil at a depth of 64 cm from the top of the surface is

A horizontal pipe of 30 cm² cross-sectional area carries water at a speed of 2.5 m/s.This pipe feeds a smaller pipe of cross section 10 cm².Find the speed of water flow in the smaller pipe.