A minivan is pulled by a tow truck at 60 kph. The boxlike van is 20m long, 6m high, and 3.75m wide. Estimate the skin friction, Df, on the van's top and sides. Take the density and viscosity of air as 0.0023 kg/m3 and 0.3758x10-6 N-s/m2

Q: Q 3. A submarine of length 160 m, average diameter of 15 m moves through seawater with kinematic…

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Q: Qustion. An aircraft is flying in level flight at a speed of 200 km/h through air (density, p = 1.2…

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Q: Viscosity:      A 1.5-m-long, 24-mm-diameter shaft rotates inside an equally long cylinder that is…

A: Viscosity is defined as the ratio of Shear stress to the rate of Shear stress deformation.

Q: The friction coefficient for a boundary layer is given by the expression: Cf= = 1.32 √ Rex If the…

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Q: A plate 0.05 mm distant from a fixed plate, moves at 0.5 m/s and requires force 5 N/m² to maintain…

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Q: A journal bearing 120 mm in diameter and 60 mm long has a diametral clearance of 0.20 mm. The…

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Q: Calculate the force required to lift a balloon having a volume of 65.4 m contains helium gas under…

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Q: The Falling Ball viscometer is designed based on the equilibrium relationship between the ball…

A: The velocity of the ball can be determined as shown below.

Q: cylinder with a length of 1.2 m and a diameter of 2 cm rotate inside another cylinder with same…

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Q: An airplane is flying at a pressure altitude of 15 km with a velocity of 619 m/s. The outside air…

A: Given data: T=220 KV=619 m/sh=15 km Need to determine the pressure measured by the pitot tube.

Q: On October 21, 2001, Ian Ashpole of the United Kingdom achieved a record altitude of 3.35 km (11,000…

A: Given data: Height of balloon, h = 3.5 km (11000 ft). The number of balloons, n = 600. The radius…

Q: Using the viscosity of air µ equal to 1.8 x 10-4 g/(cm s), calculate vt in cm/s for a particle with…

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Q: How does the dynamic viscosity of (a) liquids and (b) gases vary with temperature?

A: Hi and thank you for the questions. Since you have asked multiple questions, we will answer the…

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.