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K - Chapter K Problems Blinn College Physics 2425 Terry...

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Chapter K - Problems Blinn College - Physics 2425 - Terry Honan Problem K.1 Consider a pulse that in SI units has the shape u = f H x L = 8 x 2 + 4 . Write this as a function u H x , t L that describes this pulse moving in the positive x direction with a speed of 3 m ê s . Problem K.2 What are the speed and direction of a pulse on a string that (in SI units) has the form: y H x , t L = 0.04 e - J x + 0.03 t 0.06 N 2 . Problem K.3 A sinusoidal pulse on a string has the mathematical form y H x , t L = H 0.80 m L sin B 2 p 10 H x - 4 t LF . Plot the y vs. x graph at t = 0 s. By the time t = 0.6 s how much has the pulse shifted. On the same graph plot y vs. x at t = 0.6 s. Problem K.4 A string with a linear density of m = 4 μ 10 - 3 kg ê m is given a tension of 360 N. What is the speed of waves on this string? Problem K.5 The elastic limit for steel is S max = 2.7 μ 10 9 N ë m 2 ; this is the maximum stress (force per area) that steel under tension can with- stand. S max is the largest value that T ê A , the tension per area, can have without a wire breaking. If the density of steel is

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K - Chapter K Problems Blinn College Physics 2425 Terry...

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