An acoustic dipole can be modeled by two point sources (monopoles) residing close together but vibrating exactly out of phase. Suppose point source 1 is located at (0, 0, −d) and point source 2 is located at (0, 0, d), where d is very small. Further suppose that source 1 is generating the narrow-band signal f(t), leading to a spherical pressure wave given by p(r1,t) = f(t − c−1r1)/r1 and source 2 is generating the narrow-band signal −f(t), leading to a spherical pressure wave given by p(r2,t) = −f(t − c−1r2)/r2, where the two radii r1 and r1 are measured from their respective sources.

(a) Show that the measured pressure in the far field is approximately p(r, t) = zf(t − c−1r)/r2.

(b) Sketch isopressure lines in the x-z plane for the above field pattern.

Found something interesting ?

• On-time delivery guarantee
• PhD-level professional writers
• Free Plagiarism Report

• 100% money-back guarantee
• Absolute Privacy & Confidentiality
• High Quality custom-written papers

Related Model Questions

Feel free to peruse our college and university model questions. If any our our assignment tasks interests you, click to place your order. Every paper is written by our professional essay writers from scratch to avoid plagiarism. We guarantee highest quality of work besides delivering your paper on time.

Grab your Discount!

25% Coupon Code: SAVE25
get 25% !!