One of the National Academy of Engineering Grand Challenges for Engineering is Restore and Improve Urban Infrastructure. Infrastructure includes bridges and oads, but it also includes water and sewer system, railroads, and power grids. In 2016, the state of Washington opened the SR 520 "floating" bridge. The bridge is made of 77 floating concrete boxes anchored to the bed of the lake using 58 steel cables. Each cylindrical cable is 3 inches [in] thick, 1000 feet [ft] long, and made of steel. Assume the specific gravity of steel is 7.9. What is the weight of one cable in units of pound-force [Ib]?

Q: A company has several sensors in storage silos to detect the total pressure in the silos to ensure…

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Q: A flat-bottomed aluminum fishing boat has a mass of 60 kg and an area of 4.0 m2. When it is launched…

A: The mass of a boat is, m=60 kg The area of a boat is, A=4 m2 The density of water is, ρ=1000 kg/m3

Q: A pulley, which can be modelled as a solid cylinder, has a total mass of 14 kg and a radius of 20…

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Q: 1. A square plate has a side length of 1.20m. A 24.0N⋅m torque is applied about an axis…

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Q: Three children, each of weight 395 N, make a log raft by lashing together logs of diameter 0.42 m…

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Q: A dump truck uses a hydraulic cylinder, as the drawing illustrates, to raise the trailer. A pump…

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Q: A rectangular block of wood has a dimension of 20cm x 20 cm x 50cm and float in fresh water. If the…

A: Given: The size of the block is 20cm x 20 cm x 50cm. The depth inside the water is 25 cm.

Q: veterinarian uses a hypodermic syringe like the one shown in the figure to inject a horse with a…

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Q: If the buoyant force was found to be 1.0 N on the submerged cylinder. What is the volume of the…

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Q: The owner of the gas station wants to bury the gasoline so deep that no vacuum pump will be able to…

A: specific gravity of gasoline = 0.712 atmospheric pressure = 101325Pascals

Q: to what depth h is the raft submerged by its weight?

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Q: Sea water has a density 1030 kg/m3. A submarine has a mass of 22.5x106 kg when floating in sea water…

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Q: A man is passing barrels of water to another person from a height of 5 meters. The barrel is…

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Q: An ocean-going research submarine has a 35.0-cm-diameter window 8.0 cm thick. The manufacturer says…

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Q: An object has a weight of 9.6 newtons in air. However, its apparent weight is only 6.5 newtons when…

A: Given Weight of the object in air = Wair = 9.6 N Apparent weight in water = Wwater = 6.5 N WWe have…

Q: A cube with density 850 kg/m^3 floats in salt water of density 1030 kg/m^3. One side of the cube has…

A: Given data: The density of the wood is ρ=850 kg/m3 The density of saltwater is ρw=1030 kg/m3 The…

Q: A water pipe having a 2.47 cm inside diameter carries water into the basement of a house at a speed…

A: The problem can be illustrated as:  * PART A: To determine the velocity at Point 2, we can use the…

Q: An underwater salvage company wants to use a spherical balloon to float a 1000 kg cannon from an old…

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Q: small submarine of volume 1700 m3 is fully submerged and suspended in Mediterranean seawater with a…

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Q: A legendary Dutch boy saved Holland by plugging a hole in a dike with his finger, which is 1.20 cm…

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Q: A block is attached to a spring scale. When the block is suspended in air, the scale reads 270 N;…

A: Write the given values with the suitable variables. W=270 NF=150 N Here, W is the reading of the…

Q: The students build a raft made of 15 logs lashed together. Each log is 53.2 cm in diameter and has a…

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Q: When a block of ebony is placed in ethanol, what percentage of its volume is submerged? The density…

A: Density of ethanol (liquid) is Density of object is between  and Find:The percentage of object's…

Q: The density of water is 1 g/cm. An object that floats displaces an amount of water with a mass equal…

A: We need to tell what will the spring balances show for Cube X and cube Y.

Q: Three balls with the same radius 28 cm are in water. Ball 1 floats, with half of it exposed above…

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Q: A water pipe having a 2.18 cm inside diameter carries water into the basement of a house at a speed…

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Q: A block of wood has a mass of 3.61 kg and a density of 592 kg/m3. It is to be loaded with lead (1.13…

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Q: A legendary Dutch boy saved Holland by plugging a hole in a dike with his finger, which is 1.20 cm…

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Q: n the Netherlands, a dike holds back the sea from a town below sea level. The dike springs a leak…

A: Height, h = 3.25 mArea, A = 1.43 cm² = 1.43×10-4 m² = 0.000143 m²

Q: Crew members attempt to escape from a damaged submarine 100 m below the surface.What force must be…

A: The pressure at the depth is given by Therefore, the difference in pressure is

Q: A cube of wood having an edge dimension of 18.3 cm and a density of 653 kg/m3 floats on water.…

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Q: An iceberg with a volume of 20,000 m³ is floating in the sea. It is seen that 8% of the iceberg is…

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Fluid Pressure

The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.