How fast must the air flow over the upper surface of wing
An airplane with a mass of 2.6 106 kg. has the air flow past the lower surface of the wings at 100 m/s. If the wings have a surface area of 1200 m2, how fast must the air flow over the upper surface of the wing if the plane is to stay in the air?
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You are swinging your younger sister in a horizontal circle of radius 0.81 m. Her mass is 26 kg and you arrange it so she makes one revolution every 1.5 s.
A cannon tilted upward at 20° fires a cannonball with a speed of 120 m/s. What is the component of the cannonball's velocity parallel to the ground?
A carpenter places a board weighing 30 lb on the edge of the roof 24 ft above the ground. How much potential energy does the board have in relation to the ground?
The particle is moving in the +z direction solve the Schrodinger equation to derive the allowed wave functions for this particle.
A 195 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a battery with an emf of 24.0 V. If the 195 pF capacitor stores 125 pC of charge on its plates, what is the unknown capacitance?
A two-ended "rocket" that is initally stationary on a frictionless floor, with its center a the origin of an x axis. The rocket consists of a central block C(of mass M = 6.00kg) and blocks L and R (each of mass m = 2.00kg) on the left and right si
A rifle that shoots bullets at 436 m/s is to be aimed at a target 44.2 m away. If the center of the target is level with the rifle, how high (in cm) above the target must the rifle barrel be pointed so that the bullet hits dead center?
A 747 airliner reaches its takeoff speed of 170 in 35.3. What is the magnitude of its average acceleration?
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