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Question: For the double-wedge airfoil shown in Figure, find the lift per meter span if the Mach number and pressure in the uniform air flow ahead of the airfoil are 3 and 40 kPa, respectively.
A 0.25-kilogram mass on a vertical spring oscillates at a frequency of 2.0 Hz. If a 0.60-kilogram mass were instead suspended from the same spring, what would be the frequency of oscillation
Consider the Earth and a cloud layer 900 m above the planet to be the plates of a parallel-plate capacitor. what is the maximum charge the cloud can hold
the speed of sound in air is 331 ms. during the next thunderstorm try to estimate your distance from a lightning bolt
Four vectors A,B,C ,D and are shown (not to scale). Vector A has magnitude 23.0 and acts at an angle of 14.7 degrees with respect to the positive x axis. find the magnitude and direction of the resultant vector R
a 3.50 kg penguin runs onto a huge sheet of frictionless arctic ice. at t 0 it is at x 0 and y 0 with an initial
The average Nascar race car weighs 3,400 lbs. At a recentNascar race the cars went flying around the banked curves atDaytona International Raceway. What is the centripetal force on the car keeping it goingaround the curve at a speed of 200 mph
q1. two speakers 6.00 m apart are driven by the same audio oscillator so that each one produces a sound consisting of
Suppose a meteor of mass 3.40 1013 kg is moving at 31.0 km/s relative to the center of the Earth and strikes the Earth. What is the change in the angular speed of the Earth due to this collision
By what method will a positively charged rod produce a negative charge on a conducting sphere that is placed on an insulating surface?
an electron in a uniform electric field increases its speed from 1.7times107 to 4.1times107 over a distance of 1.3.
Due to a tune-up, the efficiency of an automobile engine increases by 7.00 %. For an input heat of 1290 J, how much more work does the engine produce after the tune-up than before
The box has a mass of 31.0 kg, and the coefficient of kinetic friction between the box and floor is 0.530. The acceleration of gravity is 9.81 m/s2. Illustrate what is the acceleration of the box?
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