Determining the normal distribution
Suppose that X has a Normal distribution, and Y =
exp(X).
(a) Derive the PDF of Y.
(b) Compute P(Y ? 5).
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A string, 0.23 m long, vibrating in the n = 2 harmonic, excites an open pipe, 0.82 m long, into second overtone resonance. The speed of sound in air is 345 m/s. What is the number of antinodes in the standing wave pattern of the pipe?
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If the stresses necessary to maintain whisker/coating compatibility are assumed to only be acting in the direction of the filament axis, what is their sign and magnitude at 20 degrees C?
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