Air 5°C 70 km/h 4 m 15 m

Q: In the laminar flow of air (Pr = 0.7) over a heated plate, if 8 and 8, denote, respectively, the…

A: Given:Prandtl number, Pr=0.7

Q: Problem 3. Air at 20°C and 1 atm (p= 1.2 kg/m³ and u= 1.8×105 kg/(m-s)) flows at 3 m/s past a sharp…

A: (a) Calculate the Reynolds's number. Re=ρvLμ=1.2311.8×10-5=2×105<5×105so flow is laminar

Q: A shuttlecock is launched from the ground with an initial speed of 37.3135 m/s at an angle of 7.8471…

A:

Q: A shuttlecock is launched from the ground with an initial speed of 34.6092 m/s at an angle of 5.462…

A: Given When drag force becomes equal to weight net force is zero Final velocity can be determined as

Q: 6. During a winter day, wind at 70 km/h, 5°C, and 1 atm is blowing parallel to a 4-m-high and 15…

A:

Q: The rectangular wings of a microlight aircraft have a combined spanwise length of 9.144 m and…

A: Given Length = 9.144 m Width = 0.9144 m Drag coefficient = 0.01 Lift coefficient = 0.03 Velocity =…

Q: 5 Air at 90°C and 1 atm flows over a flat plate at a velocity of 30 m/s. How thick is the boundary…

A:

Q: A shuttlecock is launched from the ground with an initial speed of 33.3163 m/s at an angle of 8.1977…

A:

Q: What is the effective angle of attack ? What is the induced drag ? Show them by drawing a sketch and…

A:

Q: Is it possible to mix multiple airfoil profiles for an aircraft wing? If so, then why.

A: Introduction: The cross sectional profile of an aircraft wing is referred as airfoil for the…

Q: A 9-cm-diameter smooth sports ball has a velocity of 36 km/h during a typical hit. Determine the…

A: The initial velocity of the ball is given as, The final speed of the ball in rpm, The radius of…

Q: A circular sign has a diameter of 50 cm and is subjected to normal winds up to 150 km/h at 10°C and…

A: The diameter of circular sign, D = 50 cm. Wind velocity, V = 150 km/h. Pressure applied on the…

Q: Air at 250C and 1.0 bar is flowing over a flat plate with a velocity of 8 m/s. Determine: (i) The…

A:

Q: An airplane is cruising at a velocity of 950 km/h in air whose density is 0.526 kg/m3. The airplane…

A: step-1   given data      velocity (v) = 950 km/hdensity of air = 0.526 kg/m3area of wing (A) = 90…

Q: A 5-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force…

A: Given data: The diameter of the electrical transmission line, d = 5 mm. The velocity of wind…

Q: During a winter day, wind at 55 km/h, 5°C, and 1 atm is blowing parallel to a 4-m-high and 10-m-long…

A: Given data velocity of wind 55 km/hr = 15.27 m/sec height of the wall h = 4m length of the wall L =…

Q: Dust particles of diameter 0.06 mm and density 1.6 g/cm are unsettled during high winds and rise to…

A:

Q: A circular sign has a diameter of 52 cm and is subjected to normal winds up to 160 km/h at 10°C and…

A: Given data as per question Diameter = 52 m Velocity of wind = 160 km /h = 44.4 m/s Temperature = 100…

Q: A medium-sized jet has a 3.8-m-diameter fuselage and a loaded mass of 85,000 kg. The drag on an…

A:

Q: To reduce the drag coefficient and thus to improve the fuel efficiency, the frontal area of a car is…

A: Given details: Ai=18 ft2Ao=15 ft2d=12000 mi=12000×5280=63360000ftv=55…

Q: describe thickness of the boundary layer in laminar and turbulent flows, Boundary layer separation…

A: Boundary-Layer Thickness: Boundary layer thickness is defined as the distance in the perpendicular…

Q: A commercial airplane has a total mass of 150,000 lbm and a wing planform area of 1700 ft2. The…

A: The densities of air are 1.20 kg/m3 on the ground and 0.312 kg/m3 at cruising altitude. The…

Q: b) A 4 m long and 2 m wide plate shown in Figure Q1(b) is positioned in seawater flowing at 1.5 m/s…

A:

Q: What is the effect of streamlining on (a) friction drag and (b) pressure drag? Does the total drag…

A: Effect of streamlining on:

Q: The rectangular wings of a microlight aircraft have a combined spanwise length of 9.144 m and…

A: Given Data The spanwise length of wings is:l=9.144 m The streamline width of the wings is:L=0.9144…

Q: Explain the difference between a favorable and an adverse pressure gradient in a boundary layer. In…

A: Bulk flows are governed by the pressure gradient. The fluid will flow in direction of decreasing…

Q: is the drag coefficient 2 or 0.2?

A: Yes from figure we can see that drag coefficient at 80000 is 0.2 not 2

Q: During flow over a given body, the drag force, the upstream velocity, and the fluid density are…

A: Drag force is the resistive force exerted by a fluid due to its motion. Drag force is supposed to…

Q: A 30-cm-diameter smooth ball of dėnsity Ppall = 210 kg/m³ is tied to an object on the bottom of a…

A: Given: The diameter of smooth ball, d = 30 cm The density of ball, ρball = 210 kg/m^3 The density of…

Q: A commercial airplane has a total mass of 70,000 kg and a wing planform area of 150 m2. The plane…

A: Given, The mass of the plane, M=70000 kg Wing planform area, A=150 m2 Speed, V=558 km/h=558×518…

Q: A flat plate ( 1.5 m) long and ( 1.5 m) wide is towed in water ( p 1000 kg/m and v=1.31 * 10 “m² /s)…

A:

Q: Light oil at 75°F flows over a 22-ft-long flat plate with a free-stream velocity of 6 ft/s.…

A: Given data: Length of plate, L = 22 ft Stream velocity, V = 6 ft/s Temperature, T = 75°F

Q: In the laminar flow of air (Pr = 0.7) over a heated plate, if & and 8, denote, respectively, the…

A: Given:Pranddtle number, Pr=0.7δ=hydrodynamic boundary layerδT=Thermal boundary layer

Q: A shuttlecock is launched from the ground with an initial speed of 36.9838 m/s at an angle of 9.9728…

A: given information:     The initial speed of shuttle cock (u) = 36.9838 m/s   angle made by initial…

Q: Ql: Explain and sketch the boundary layer over a horizontal flat plate, then write the equations…

A: ◆ In laminar region --> Velocity profile is parabolic. ◆ In turbulent region --> Velocity…

Q: 1) Engine oil at 80°C flows over a 6-m-long flat plate whose temperature is 30°C with a velocity of…

A:

Q: Example 5 The total mass, wing area, cruising speed, and air resistance power of a small aircraft…

A: Givenm=1800kgA=42m2V=280 km/hr =280×1033600=77.78m/sPa=190kWH=4000m

Q: Consider laminar flow over a flat plate. How does the local friction coefficient change with…

A: In the boundary layer flow of a fluid over any surface, the local friction coefficient represents a…

Q: Water at 10°C flows over a 1.1-m-long flat plate with a velocity of 0.55 m/s. If the width of the…

A: Given data: The density of water, ρ = 999.7 kg/m3. Dynamic viscosity of water, µ = 1.307×10-3…

Q: (b) A smooth thin plate 10 m long and 1 m wide is placed in an air stream at 3 m/s with its length…

A: As per bartleby guidelines we are allowed to solve only 1st question if multiple questions are…

Q: Define the frontal area of a body subjected to external flow. When is it appropriate to use the…

A: Frontal area is the projected area of the body to a plane which is normal to the flow of the fluid.…

Q: What is lift? What causes it? Does wall shear contribute to the lift?

A: given: What is lift? What causes it? Does wall shear contribute to the lift?

Q: Light oil at 75°F flows over a 17-ft-long flat plate with a free-stream velocity of 5 ft/s.…

A: Given Data⇒Light oil atT=75°F=297.039 KLenght of plateL=17 ftFree stream velocityv=5ftsProblem…

Q: Calculate the heat transfer from a 60 cm x 60 cm plate on which air flows at 40⁰C and. The plate…

A:

Q: A 10-cm-diameter, 30-cm-high cylindrical bottle contains cold water at 3°C. The bottle is placed in…

A: Given:- Diameter of bottle=10cm height=30cm temp of cold water =3°C temp of air=27°C temp of water…