Serway & Jewett — Wave Motion: Problem 54

Consider the following wave function in SI units: \[\Delta P(r, t) = \left( \frac{25.0}{r} \right) \sin(1.36r - 2030t)\] Explain how this wave function can apply to a wave radiating from a small source, with \(r\) being the radial distance from the center of the source to any point outside the source. Give the most detailed description of the wave that you can. Include answers to such questions as the following and give representative values for any quantities that can be evaluated. (a) Does the wave move more toward the right or the left? (b) As it moves away from the source, what happens to its amplitude? (c) Its speed? (d) Its frequency? (e) Its wavelength? (f) Its power? (g) Its intensity?