DATA You are measuring the frequency dependence of the average power P av transmitted by traveling waves on a wire. In your experiment you use a wire with linear mass density 3.5 g/m. For a transverse wave on the wire with amplitude 4.0 mm. you measure P av (in watts) as a function of the frequency f of the wave (in Hz). You have chosen to plot P av as a function of f 2 (Fig. F15.76 ). (a) Explain why values of P av plotted versus f 2 should be well fit by a straight line. (b) Use the slope of the straight-line fit to the data shown in Fig P15.76 to calculate the speed of the waves. (c) What angular frequency ω would result in P av = 10.0 W? Figure P15.76
DATA You are measuring the frequency dependence of the average power P av transmitted by traveling waves on a wire. In your experiment you use a wire with linear mass density 3.5 g/m. For a transverse wave on the wire with amplitude 4.0 mm. you measure P av (in watts) as a function of the frequency f of the wave (in Hz). You have chosen to plot P av as a function of f 2 (Fig. F15.76 ). (a) Explain why values of P av plotted versus f 2 should be well fit by a straight line. (b) Use the slope of the straight-line fit to the data shown in Fig P15.76 to calculate the speed of the waves. (c) What angular frequency ω would result in P av = 10.0 W? Figure P15.76
DATA You are measuring the frequency dependence of the average power Pav transmitted by traveling waves on a wire. In your experiment you use a wire with linear mass density 3.5 g/m. For a transverse wave on the wire with amplitude 4.0 mm. you measure Pav (in watts) as a function of the frequency f of the wave (in Hz). You have chosen to plot Pav as a function of f2 (Fig. F15.76). (a) Explain why values of Pav plotted versus f2 should be well fit by a straight line. (b) Use the slope of the straight-line fit to the data shown in Fig P15.76 to calculate the speed of the waves. (c) What angular frequency ω would result in Pav = 10.0 W?
While chasing the person who released all the ping pong balls, an astronaut is screaming at 694Hz while moving towards the miscreant at 5.2 m/s. The prankster is fleeing, but at only 3.1 m/s. The air on the ISS is kept pretty close to standard pressure and temperature, so the speed of sound is 343 m/s. At what frequency does the prankster hear the yell?
Do not actually solve the problem numerically or algebraically, just pick the one equation and define the relevant knowns and single unknown.
A sound wave is modeled with the wave function ΔP = 1.20 Pa sin (kx − 6.28 × 104 s−1 t) and the sound wave travels in air at a speed of v = 343.00 m/s. (a) What is the wave number of the sound wave? (b) What is the value for ΔP(3.00 m, 20.00 s) ?
A horizontal wire is stretched with a tension of 94.0 N, and the speed of transverse waves for the wire is 406 m/s. What must the amplitude of a traveling wave of frequency 69.0 Hz be for the average power carried by the wave to be 0.365 W?
Choices:
7.23mm
4.10mm
5.00mm
8.45mm
Chapter 15 Solutions
Mastering Physics with Pearson eText -- Standalone Access Card -- for University Physics with Modern Physics (14th Edition)
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Wave Speed on a String - Tension Force, Intensity, Power, Amplitude, Frequency - Inverse Square Law; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=vEzftaDL7fM;License: Standard YouTube License, CC-BY