1. A spectator at a parade receives an 890 Hz tone from an oncoming trumpeter who is playing an 881 m Hz note. At what speed vs, is the musician approaching if the speed of sound is 339 S' m S 9 DECI VAN ENGE ZAPA PARA KA ZAZELE KAYA -? S
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- Rank the beat frequency from highest to lowest for the following pairs of sounds: a. 132 Hz, 136 Hz b. 264 Hz, 258 Hz c. 528 Hz, 531 HzAn ambulance is moving towards you at a speed of 15m/s. If the frequency of the actual siren is 350hz and the speed of sound in air is 350m/s what frequency of tge siren you hear1. As it approaches a hiker standing on the highway, a car traveling at 100 km/h blows its horn. Determine the frequency of the sound waves reaching the hiker if the car's horn has a frequency of 440 Hz and the temperature of the air is at 0'C (a) as the car approaches and (b) after it has passed the hiker. ca00 1 L. Whet uill bo ito fro quenou if
- The siren is moving away from the listener with a speed of 33m/s, and the listener moves toward the siren with a speed of 8 m/s what frequency does the listener hear if the siren emits sound with frequency 334 Hz. Speed of sound is 344 m/s.f7. A hiker shouts toward a cliff .685 miles away. The returning echo is heard 4.00 s later. a) What is the speed of sound? b) If the wavelength is .750 m, what is the frequency? c) What is the period?E16. If one guitar string is tuned to a frequency of 440 Hz and a string on another guitar produces 8 beats per second when played together with the first string, what are the possible frequencies of the second string?
- 8. A physics student notices that 4.0 waves ar- rive at the beach every 20. seconds. The fre- quency of these waves is (1) 0.20 Hz (2) 5.0 Hz (3) 16 Hz (4) 80. Hz12. When two tuning forks are vibrating at the same time one observes that the sound grows louderthen softer at regular intervals. The change in volume occurs at a rate of exactly 48 times in16.0 s. If one tuning fork is known to have a frequency of 256.0 Hz, what are the two possiblefrequencies of the second tuning fork?4-
- A bat a rest sends out ultrasonic sound waves at 50.0 kHz, and receives them returned form an object moving directly away from it at 30.0 m/s. What is the received sound frequency. Please sketch the situation, define all variables neatly. Thank you54. What is the intensity in decibels of a 20 Watt speaker at 50 meters away? Intensity = Power/ Area of Sphere A. 88 dBB. 94 dBC. 98 dBD. 104 dB6. A singing barber shop quartet all together makes a sound level intensity of 85 dB when you are standing 7.8 m away on a warm day (27 °C). Assuming each of the 4 singers has equally strong vocals, what power is each singer producing? ANINT The figure below shows two masses hanging 110 g A wave pulse travels the length 8.