Physics, 06.05.2020 06:26 arisworlld
Consider two pulses (a wave with only a single peak) traveling towards each other on a string. When the instant that the peaks of these two pulses cross, the resultant disturbance has a maximum displacement of 2.98 A where A is the amplitude of the first pulse. What must be the amplitude of the second pulse be? (Here, a positive amplitude represents an upward pulse on the string while a negative amplitude represents a downward or inverted pulse.)
Answers: 1
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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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Consider two pulses (a wave with only a single peak) traveling towards each other on a string. When...
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