Figure 2: Problem 17 17. The curve in Fig. 2 that represents the speed of sound...
A bystander hears a siren vary in frequency from 550 Hz to 364 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.) m/s b. A trailer truck traveling east at 20.0 m/s sounds a 800 Hz horn. What is the wavelength of the sound heard by a stationary listener located west of the truck? (The speed...
The following graph represents the perceived frequency of a car as it passes a student. Perceived Frequency (Hz) 227 1951 Time(s) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 (a) If the true frequency of the car's horn is 210 Hz, how fast was the car traveling (in m/s)? (Assume the speed of sound is 343 m/s.) m/s
1. The following graph represents the perceived frequency of a car as it passes a student. (a)If the true frequency of the car's horn is 170 Hz, how fast was the car traveling (in m/s)? (Assume the speed of sound is 343 m/s.) m/s (b) On the graph above, draw a line demonstrating the perceived frequency for a car traveling twice as fast. Label all intercepts, maximums, and minimums on the graph. (Assume the perceived frequency for the car traveling...
1. A bystander hears a siren vary in frequency from 586 Hz to 392 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.) Answer in 3 significant figures m/s 2. A trailer truck traveling east at 34.0 m/s sounds a 1200 Hz horn. What is the wavelength of the sound heard by a stationary listener located...
A car's horn produces a frequency of 440 Hz at rest.If the car is traveling east at 20 m/s towards an observer, what speed and direction (E or W) must an observer have to hear a frequency of 450 Hz?
You are traveling North at 5.00 m/s. A truck is behind you, also traveling North, at 35.0 m/s. The truck blows its horn, which produces an actual frequency of 370 Hz. The truck passes you, and blows its horn again. Below are shown pairs of frequencies, one for before the truck passes and one for after the truck passes. Which of the pairs of frequencies is correct for what you will hear? A. Before, 406 Hz. After, 341 Hz. B....
9. The speed of sound was measured in a block of using a sound source and a detector, as shown, The source travels through the block and was detected at the opposite end. From this information, the time interval for the wave to travel the entire length of the block was measured and metal (mass density of 2.700x10 kg/m produced a sound wave that determined to be 8.14x10s seconds. i. Calculate the speed of the sound wave through the metal...
A driver travels northbound on a highway at a speed of 23.0 m/s. A police car, traveling northbound at a speed of 44.0 m/s, approaches with its siren producing sound at a frequency of 2600 Hz. What frequency does the driver observe after police car passes him? (Assume room temperature of 20°C when determining the speed of sound.) a. 3183 b. 2459 Cc. None of the given answers d. 2150 e. 2783 Cf. 3430
Amy, standing near a straight road, records the sound of the horn of a car traveling at a constant speed. The recorded frequency as a function of the car's position along the road for trials at different car speeds is accurately graphed below. 1050 - - - - - -.-.-.-.-.-.-.-.-.-.--E-- R . Observed Frequency, (Hz) - - - - - - - - - - -100 -50 50 100 Position, (m) Greater than the speed in trial Ris ..... to...
Question 2 12 pts The speed of sound in air is 343 m/s, while the speed of sound in water is 1,446 m/s. a) If the frequency of a sound wave is 300 Hz while traveling in water, what is the wavelength of the sound wave? b) If the wave length of a sound wave traveling in air is 3 m, what is the frequency of the sound wave and is it audible to human beings? c) A sound wave...