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2 pts A spectator at a parade receives an 830-Hz tone from a moving trumpeter who...
QUESTION 7 A spectator at a parade receives an 888 Hz tone from an oncoming trumpeter...
QUESTION 7 A spectator at a parade receives an 888 Hz tone from an oncoming trumpeter who is playing an 877 Hz note. At what speed is the musician approaching if the speed of sound is 340 m/s? Express the numeral of your answer in SI units with 2 or more significant figures. QUESTION 2 Direction of wave travel Undisturbed position INA una Direction of wave trave Undisturbed position Time For the waves shown above, what is the period? oc...
QUESTION 3 A sonar echo returns to a submarine 0.9 s after being emitted. What is...
QUESTION 3 A sonar echo returns to a submarine 0.9 s after being emitted. What is the distance to the object creating the echo? (Assume that the submarine is in the ocean, and the speed of sound in ocean water is 1540 m/s) Express the numeral of your answer in SI units with 3 or more significant figures. QUESTION 4 Infrasonic waves have the frequencies in this range: Below 20 Hz Above 20 kHz 20 Hz -20 kHZ QUESTION 5...
Question: To demonstrate the Doppler effect, your lecturer puts a tone generator playing a 564 Hz...
Question: To demonstrate the Doppler effect, your lecturer puts a tone generator playing a 564 Hz tone in a ball tied to a rope and swings it around. As it swings, you hear a maximum frequency of 578 Hz from your seat in the middle of the large lecture hall. Assume the speed of sound through the air is 336 m/s. Part 1) What speed is the ball moving at? v = 8.14 m/s Your last answer was interpreted as...
2. A 1,720-Hz pure tone is played on a stereo in an open field. A person...
2. A 1,720-Hz pure tone is played on a stereo in an open field. A person stands at a point that is 8 m from one of the speakers and 8.7 m from the other. Does the person hear the tone? (Assume the speed of sound is 344 m/s.) The path difference of _____ is ______ times the wavelength of the tone, giving _________ interference.
To measure her speed, a skydiver carries a buzzer emitting a steady tone at 1 800...
To measure her speed, a skydiver carries a buzzer emitting a steady tone at 1 800 Hz. A friend on the ground at the landing site directly below listens to the amplified sound he receives. Assume the air is calm and the speed of sound is independent of altitude. While the skydiver is falling at terminal speed, her friend on the ground receives waves of frequency 2 172 Hz. (Use 343 m/s as the speed of sound.) (a) What is...
Two speaker emit the same pure tone at 170 Hz, but they are half a cycle...
Two speaker emit the same pure tone at 170 Hz, but they are half a cycle out of phase with each other (so one produces a "trough" exactly when the other one produces a "crest"). The speakers are three meters apart. You are standing between the speakers, one meter from one (and therefore two meters from the other). What do you hear? The speed of sound in air is 340 m/s. O A 170 Hz tone, but very quietly, if...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
Two identical speakers (labeled 1 and 2) are playing a tone with a frequency of 225...
Two identical speakers (labeled 1 and 2) are playing a tone with a frequency of 225 Hz, in phase. The centers of the speakers are located 6.00 m apart. Five observers are standing on a line that is 6.00 m in front of the speakers as shown in the figure. Each observer is separated by 1.00 m and Sue is directly in front of speaker 1. Determine which observer or observers will experience constructive interference from the sound emitted by...
Question: A cyclist ringing a bell with a frequency of 658 Hz rides towards a wall...
Question: A cyclist ringing a bell with a frequency of 658 Hz rides towards a wall (Figure 1). The wall reflects the note back towards the cyclist. A sound meter detects a beat frequency of 13.0 Hz between the bell and the reflected tone as the cyclist rides. Assume the speed of sound in air is 337 m/s. Cyclist with bell Wall Figure 1: A cyclist with a bell riding towards a brick wall. The cyclist rings the bike's bell...
need help with all these problems please 2. An iceskater is turning at a PERIOD of...
need help with all these problems please
2. An iceskater is turning at a PERIOD of (1/3) second with his arms outstretched. a) What is his ANGULAR VELOCITY o? b) If he pulls his arms towards his body to reduce his MOMENT OF INTERTIA by 16 what is his ANGULAR VELOCITY ? c) How much does his ROTATIONAL KINETIC ENERGY change? That is, if the initial Kinetic Energy is (KE) initial, what is the final KE? d) Where did that...
QUESTION 7 A spectator at a parade receives an 888 Hz tone from an oncoming trumpeter who is playing an 877 Hz note. At what speed is the musician approaching if the speed of sound is 340 m/s? Express the numeral of your answer in SI units with 2 or more significant figures. QUESTION 2 Direction of wave travel Undisturbed position INA una Direction of wave trave Undisturbed position Time For the waves shown above, what is the period? oc...
QUESTION 3 A sonar echo returns to a submarine 0.9 s after being emitted. What is the distance to the object creating the echo? (Assume that the submarine is in the ocean, and the speed of sound in ocean water is 1540 m/s) Express the numeral of your answer in SI units with 3 or more significant figures. QUESTION 4 Infrasonic waves have the frequencies in this range: Below 20 Hz Above 20 kHz 20 Hz -20 kHZ QUESTION 5...
Question: To demonstrate the Doppler effect, your lecturer puts a tone generator playing a 564 Hz tone in a ball tied to a rope and swings it around. As it swings, you hear a maximum frequency of 578 Hz from your seat in the middle of the large lecture hall. Assume the speed of sound through the air is 336 m/s. Part 1) What speed is the ball moving at? v = 8.14 m/s Your last answer was interpreted as...
Two speaker emit the same pure tone at 170 Hz, but they are half a cycle out of phase with each other (so one produces a "trough" exactly when the other one produces a "crest"). The speakers are three meters apart. You are standing between the speakers, one meter from one (and therefore two meters from the other). What do you hear? The speed of sound in air is 340 m/s. O A 170 Hz tone, but very quietly, if...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
Two identical speakers (labeled 1 and 2) are playing a tone with a frequency of 225 Hz, in phase. The centers of the speakers are located 6.00 m apart. Five observers are standing on a line that is 6.00 m in front of the speakers as shown in the figure. Each observer is separated by 1.00 m and Sue is directly in front of speaker 1. Determine which observer or observers will experience constructive interference from the sound emitted by...
Question: A cyclist ringing a bell with a frequency of 658 Hz rides towards a wall (Figure 1). The wall reflects the note back towards the cyclist. A sound meter detects a beat frequency of 13.0 Hz between the bell and the reflected tone as the cyclist rides. Assume the speed of sound in air is 337 m/s. Cyclist with bell Wall Figure 1: A cyclist with a bell riding towards a brick wall. The cyclist rings the bike's bell...
need help with all these problems please
2. An iceskater is turning at a PERIOD of (1/3) second with his arms outstretched. a) What is his ANGULAR VELOCITY o? b) If he pulls his arms towards his body to reduce his MOMENT OF INTERTIA by 16 what is his ANGULAR VELOCITY ? c) How much does his ROTATIONAL KINETIC ENERGY change? That is, if the initial Kinetic Energy is (KE) initial, what is the final KE? d) Where did that...
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