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In a wind tunnel the pressure on the top surface of a modelairplane wing is 8.6 x 104 N/m2 and thepressure on the bottom surface is 8.8 x 104N/m2. If the total area of the top and bottom surfacesof each wing is 1.8 m2 ,what is the total lift on the model airplane?
In a lightning bolt, a large amount of charge flows during a time of 2.9 x 10-3 s. Assume that the bolt can be represented as a long, How much charged has flowed during the lightning bolt?
A parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 2.00 and whose dielectric strength is 1.00 108 V/m. Find the minimum area of the capacitor plates
A projectile is fired at v0 = 420.0 m/s at an angle of ? = 67.2o with respect to the horizontal. Assume that air friction will shorten the range by 30.1%. How far will the projectile travel in the horizontal direction, R?
assume the following situation. a gurney is pushed across a level rug in which the coefficient of friction is 0.15. if
an astronaut is performing a space walk outside the international space station. the total mass of the astronaut with
Two wires are identical, except that one is aluminum and one is copper. What is the resistance of the copper wire
An object is attached to the lower end of a 100-coil springthat is hanging from the ceiling. By how much does each spring stretch
A set of charges are arranged in the following way: a 10.0 nC (nanocoulomb) positively charged particle sits at the origin of a coordinate system, Sketch a diagram of this charge configuration
a cannon sends a projectile towards a target a distance1420m away. The initial velocity makes an angle 21 degrees with thehorizontal. the target is hit. How high is the highest point of trajectory
An elevator with a mass of 1000 kg, including passengers, is ascending at constant speed. What is the power delivered by a motor for this ascend
A laser produces a 5.10mW beam of light, consisting of photons with a wavelength of 637.8nm. How many photons are emitted by the laser each second
question a glass is half-full of water with a layer of vegetable oil n 1.47 floating on top. a ray of light traveling
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