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an airplane on a carrier is designed so that the speed of the air below the wing is the air speed, v, of the plane, and the speed above the wing is 30% bigger. The plane weighs 5000 kg. Air has a density of 1.2 kg/m^3 at sea level. The take off speed of the plane is 60 m/s. What is the total wing area of the plane?
The rope is initially swung around the axis, causing the wood to have a tangential velocity of 4.0 m/s. After one revolution the wood is observed to have a speed of only 2.1 m/s.
Four Identical masses of 500.0g are placed at the corners of a square, distance 0.50 m apart. Find the magnitude of net gravitational force exerted by three masses
Dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high speed. What is the force of the water on the dolphin as it is coming to rest
A small charged bead has a mass of 2.0g . It is held in a uniform electric field E? = (200,000 N/C, up). What is the charge on the bead
q1. a 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal
A current of 38.9mA flows in a silver wire of diameter 3.33 mm. Find the electric field strength inside the wire
A 450 gram ball of copper at 20.0 degree C is placed in a pot of boiling water until equilibrium is reached. How much thermal energy is absorbed by the ball
A 7.45-g bullet is moving horizontally with a velocity of +347 m/s, where the sign + indicates that it is moving to the right. What is the velocity of the second block after the bullet imbeds itself
A 25C capacitor is charged to a potential of 18V. (a) How much charge is stored on the capacitor? (b) The potential is then changed so that the charge becomes 5.9x10-4C. What is the change in potential?
In the figure, a laser beam of power 5.10 W and diameter 2.20 mm is directed upward at one circular face (of diameter less than 2.20 mm) of a perfectly reflecting cylinder, What is the cylinder's height
A glass is slid across a table top, goes off the edge and falls to the floor below. With what velocity did the glass leave the table top
A hollow spherical shell with mass 1.80kg rolls without slipping down a slope that makes an angle of 40.0? with the horizontal. Find the magnitude of the frictional force acting on the spherical shell
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