Physics, 04.10.2019 22:00 natewelch353
Longitudinal waves cannot travel through a vacuum. true false
Answers: 1
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What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?
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Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
Answers: 3
Longitudinal waves cannot travel through a vacuum. true false...
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