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An airplane has a mass of 1.7x10^6kg and the air flows past the lower surface of the wings at 96 m/s. If the wings have a surface area of 1200m^2, how fast must the air flow over the upper surface of the wing if the plane is to stay in the air?
A horizontal wire of length 0.43 m, carrying a current of 6.9 A, is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
A large bouncy ball with a mass of 209 g is dropped straight down and then bounces back up to a height that is slightly lower than the point from which it was dropped. compute the magnitude of the average force that the floor exerts on the ball
A flat horizontal surface with an area of 505 cm2 is inside a uniform electric field of 1.40×104 N/C. What is the electric flux through the surface
Amazingly, at exact distance that you calculated in question 2a (73.5 meters), there was a trampoline! Thinking quickly, I orient myself appropriately and hit the trampoline.
A physicist visits a wealthy friend (marketing major) who has a swimming pool. Calculate the minimum thickness of the oil film
The partition is now removed, and the water expands to fill the entire tank. Find out the final temperature of the water and the volume of the tank for a final pressure of 10 kPa.
A 140-W lightbulb connected to a 120-V source experiences a voltage surge that produces 135 V for a moment. By what percentage does its power output increase
Calculate the power of the corrective lens required by a hyperopic eye whose near point is at 100.0 cm
A crane at a construction site lifts a concrete block with a mass of 440 kg from the ground to the top of a building with a height of 15.0 m
A woman with a mass of 55.0kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.470rev/s, Calculate the magnitude of the total angular momentum of the woman-plus-disk system
200 Ohm, 0.5mA galvanometers are usedfor making a 20 A ammeter and a 120 V voltmeter. Find resistance of the corresponding shunts
A model train moves along a horizontal circular track with a radius of 0.5 m. Starting from rest, What is the angular acceleration (in rad/s2) of the train
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