Hi, can I see the working for b) and c) ? Answers are provided below. Thank you!
Hi Can I See The Working For B And C Answers Are Provided Below Thank You 1 (181.69 KiB) Viewed 38 times
Hi Can I See The Working For B And C Answers Are Provided Below Thank You 2 (44.75 KiB) Viewed 38 times
2. (a) (0) Briefly describe the properties of a sound wave. In your answer, state the physical parameters of a sound wave, how sound propagates and name three sound generation mechanisms. With the aid of two sketches, explain how a sound wave appears to an observer at a fixed location and how a sound wave appears to an observer at a fixed moment in time. (b) () A microphone measures the voltages given in Table 1. tims 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 UN -1.8 -2.5 -2.2 -1.1 0.4 1.8 2.5 22 1.1 -0.4 -1.8 -2.5 -2.2 Table 1 Prepare a Figure which shows the voltage versus time. The sound wave given in Table 1 is described by U = Acos(kx - wt). Name all symbols used and state their physical units. Calculate A and w for the sound wave in Table 1 and annotate the Figure in (b)(i) to illustrate how A and w are calculated. (c) (1) Calculate the second derivative of the voltage with respect to t for the sound wave given in (b)(n). Calculate the second derivative of the voltage with respect to x for the sound wave given in (b)(ii). (1) (ii) Show that the voltage of the measured sound wave given in (b)(ii) satisfies the wave equation a2 QU=122 əx2v2 arzu, where v is the sound wave propagation velocity. Calculate the wavelength of the sound wave for v = 330 m/s. (iv) By using the wave propagation velocity vin (c)(iv), calculate the lateral displacement of the wave in (b)) for a time step of 0.5 ms.
1.c.ii – p = 130 deg 2.b.iii - A=2.5 V, f=200 Hz 2.c.iv – lambda = 1.65 m 2.C.V – dx=0.165 m
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