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Physics, 22.06.2019 06:00
Why don't you see your reflection in water with waves or repples
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Physics, 22.06.2019 07:50
The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.
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Physics, 22.06.2019 09:00
One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form
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An airplane is fl ying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the d...
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