PHYS 153Homework 9BProblem 1A jet plane at take-off can produce sound of intensity 10.0 W/m2at 30.0 m away. But youprefer the tranquil sound of normal conversation, which is 1.0μW/m2. Assume that theplane behaves like a point source of sound.(a)What is the closest distance you should livefrom the airport runway to preserve your peace of mind?(b)What intensity from the jetdoes your friend experience if she lives twice as far from the runway as you do?(c)Whatpower of sound does the jet produce at take-off?Problem 2a transverse wave on a rope is given byy(x, t) = (0.750 cm) cosπ(0.400 cm-1)x+(250 s-1)t(a)Find the amplitude, period, frequency, wavelength, and speed of propagation.(b)Sketch the shape of the rope at these values oft: 0,0.0005 s,0.0010 s.(c)Is the wave trav-eling in the +x- or-x-direction?(d)The mass per unit length of the rope is 0
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Velocity, Wavelength, maximum transverse acceleration, maximum transverse velocity