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Question: Use thin-airfoil theory to select a NACA four-digit wing section with a coefficient of lift at zero incidence approximately equal to unity and a pitchingmoment coefficient CM1/4 = -0.025. The thickness ratio is to be 0.10. Estimate the required maximum camber as a percentage of chord to the nearest whole number and its position to the nearest tenth of a chord. The CL value must be within 1% of the required value and CM1/4 within 3%.
A small rock moves in water, and the force exerted on it by the water is given by equation f=kv. How high will the rock rise
Sheena can row a boat at 3.10 mi/h in still water. She needs to cross a river that is 1.11 mi wide with a current flowing at 1.77 mi/h. Not having her calculator ready, what angle upstream should she have headed
Green light (555 nm) is normally incident on a pair of slits which are 12mircometers apart. How many interference fringes will there be
A 2.0-kg object is moving without friction along the x-axis. The potential energy curve as a function of position is shown in the figure, and the system is conservative. If the speed of the object at the origin is 4.0 m/s, what will be its speed a..
The brakes on your automobile are capable of creating a deceleration of 5.2 m/s2. what is the minimum time in which you can get your car under the 69 km/h speed limit
The electric field at the point x = 5.01 centimeter and y = 0 points in the positive x direction with a magnitude of 11.4 N/C. calculate its location and also calculate its charge
A rope pulls a 100-kg skier up a frictionless slope inclined at300 to the horizontal. What is the work done by tension
A UFO is traveling with a velocity of 3250 m/s. Suddenly the retro rocket is fired, What is the velocity of the UFO when the displacement of the craft is 215km, relative to the point where the retro rocket began firing
A block of ice of mass 0.4 kg and initial temperature T = 0 oC is placed in a sealed insulated container full of Helium gas, What is the mass of the liquid water
A 1.00-cm-high object is placed 4.70 cm to the left of a converging lens of focal length 7.60 cm. Find the position and height of the final image
A disk-shaped merry-go-round of radius 2.03m and mass 185kg rotates freely with an angular speed of 0.671rev/s. What is the final angular speed of the merry-go-round
Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the sup..
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