1. Why do different objects make different sounds when dropped on the floor?
Q: 5. A 3.8 kg rock is whirled in a vertical circle with a 1.8m string. If the rock completes 18…
A:
Q: 2. Loudness is a physiological sensation sensed by the brain. Loudness varies nearly as the…
A: a) Busy street traffic = 70 dB Close whisper = 20 dB=70-20=50 dBb) Factors on which loudness of…
Q: An ambulance with a siren emitting a whine at 1470 Hz overtakes and passes a cyclist pedaling a bike…
A:
Q: The coldest and hottest temperatures ever recorded in Ireland are –2.4°F (254 K) and 92.0°F (306 K),…
A: T1 = -2.4 °F = 254 K T2 = 92°F = 306 K To find = speed of sound
Q: Man is standing 5 meters away from machine creating noise of 90 dBA, the man is walking away from…
A: Given: The initial position of the man from the machine is, A1=5 m. The noise from the machine at a…
Q: Consider the scenario of the speed of sound in air on a hot day vs. a cold day. Which of the…
A: Sound wave is a longitudinal wave. So it's speed depends on the medium. Speed of sound decreases…
Q: Waves with frequency 2 hz travel along the rope at ramble speed 5 m/s. What is the different phase…
A: Formula to be used: ∆ϕ=2πλ∆xwhere, ∆ϕ is the different phase between a different drop of a rope∆x is…
Q: 6. Due to efficiency considerations related to its bow wake, the supersonic transport aircraft must…
A: The Match number is the ratio of the aircraft's constant speed to the sound speed, which is higher…
Q: Oil explorers often set off explosives to make loud sounds, then listen for the echoes from…
A: Given, Depth of the lake,d=520meter Speed of sound in water, vw= 1480 meter/second speed of the…
Q: A teacher wants to demonstrate that the speed of sound is not a constant value. Considering her…
A: B.
Q: An opera singer who is a baritone, lowers his pitch and raises his voice for a song. Which best…
A: The pitch of the sound depends on the frequency and the loudness of the sound depends on its…
Q: Sound travels faster in seawater (1522 m/s) than in freshwater (1482 m/s). Why is this? a. Seawater…
A: Given: The speed of the sound in seawater is 1522 ms. The speed of the sound in freshwater is 1482…
Q: Air temperature in a desert can reach 52.0°C (about 126°F). What is the speed of sound (in m/s) in…
A:
Q: 11. If 1 bug makes a sound of 8 dB then what will 25 bugs sound like?
A: 11) Given, Sound intensity level of 1 bug is 8dB.
Q: 3. A student was blowing air into a closed tube and found that he produced 4 different sounds. Below…
A: Given : 1st diagram : 1st harmonic 2nd diagram : 3rd harmonic 3rd diagram : 5th harmonic 4th…
Q: 10 A. How does the speed of sound in air compare with its speed in water and in steel? Reference…
A: The speed of sound varies significantly depending on the medium it travels through. In general, it…
Q: 3. The speed of sound in salt water is approximately 1500 m/s. Humpback whales can vocalize sounds…
A: Given Speed of sound in salt water , v = 1500 m/s Ferquency range is varying from 30 Hz to 8000…
Q: On increasing the temperature, the speed of sound in air: a. first increases then become constant b.…
A: Speed of sound in air with temperature is given by v=331+0.61T where v is speed and T is…
Q: uppose and down at the surface. The setup uses a 10-W motor and has a period of 1.0 s between bobs.…
A: POWER = P = 10 Wtime = t = 1 sec
Q: ound A Sound B Sound C
A: Three different graphs of sound waves are shown in the figure. We have to find which sound wave is…
Q: 13. Most deep sea divers suffer from impaired hearing. This is because the eardrum can be damaged…
A:
Q: Which statement does NOT explain the concept of the Doppler Effect? A. As an observer approaches a…
A: As sound source moves away from stationary object, pitch of the sound decreases.
Q: Apolice car emits sound with a frequency of 900.0 Hz is moving at 400 m/s towards an observer moving…
A: Given: The frequency of the sound is 900 Hz. The speed of the police car is 40.0 m/s. The speed of…
Q: By increasing the number of the respective clicks in the mini-lau a. Decreasing b. Gradually…
A: By increasing the number of the respective clicks in the mini-launche
Q: 6. The frequency of a tornado siren is 600 Hz. If a cyclist is moving toward the siren at 12 m/s in…
A: Ans:
Q: Problem 1 The speed of sound in a particular metal is 4900 m/s, the mass of one mole of these metal…
A: Given: speed of sound in metal vm = 4900 m/s mass of one mole of atoms m = 24 gms. the diameter of…
Q: The noise a lawn mower produces is 80 dB. How much noise is from 8 identical lawn mowers?
A: Given that-The noise of a single lawn mower produces is 80 dB.Let 'I' is the intensity of one lawn…
Q: What happens to the speed of sound in air in an increasing temperature? a.decreases b.increases…
A: 1. If temperature increases the speed of sound in air also increases. Speed of sound is directly…
Q: 2. Hearing. When sound waves strike the eardrum, this membrane vibrates with the same frequency as…
A:
Q: Sound produced at a point is heard by a person after 5 second, while the same sound is heard by…
A: Distance is defined as x=vt Here x is the distance, v is speed and t is time.
Q: 4. An observer is standing on the platform of a railway station. A train goes through the station…
A: Speed of sound in air is Decrease in sound when the vehicle crosses the observer is Find:The speed…
Q: 2. It was tradition in some army troops in the past to cease stepping in perfect formation whenever…
A: Resonance: This is a phenomena that occurs when frequency of a periodic force is equal to the medium…
Q: Question 2 If the speed of sound in air at 0 °C is 331 m/s. What will be the speed of sound in air…
A: Velocity of sound depends on temperature directly ie if temperature increases ,speed of sound…
Q: Sound can either be pleasing or distracting. Musical instruments such as piano creates sound that is…
A: Noise-cancelling headphones were originally created for airplane pilots to improve their comfort on…
Q: Two cars from different lanes approach each other. Car A moves at 80.0 km/h and car B moves at 76.0…
A: Two cars are from different lanes means they are traveling opposite to each other. The relation of…
Q: 12. Two trains on separate tracks moves toward each other. Train 1 has moved with a speed of 118…
A:
Q: A student under wäter rocks together and makes a sound with a frequency of 639.0 Hz and a wavelength…
A: Given: frequency f=639.0 Hzwavelength λ =2.4 m
Q: A supersonic airplane has a speed of 1.5 times the speed of sound. If an observer is 5 km from the…
A: A supersonic airplane has a speed of 1.5 times the speed of sound. If an observer is 5 km from the…
Q: The warning tag on a lawn mower states that it produces noise at a level of 99.0 dB. What is this in…
A: We know that the formula of noise at a level is given as βdB= 10log10II0------ eq 1 here I0 is the…
Q: you are playing a non-harmonic or percussion instrument and you change the number of overtones of a…
A: Option (B) is correct.It is hard to say because most percussion instruments don’t have a strong…
Q: 2. Say we have a ball dropped into well with a velocity of 3.28 ft/s. After 10sec, a sound of splash…
A: Given: The intial speed of the ball is 3.28 ft/s. The total time interval is 10 s. The speed of the…
Q: Why the noisepollution is considered a serious occupational health hazard.How can we prevent and…
A: Today, noise is considered a form of contamination that has a negative effect on human health, which…
Q: When acoustic resonance takes place, a loud sound is heard. Why does this happen? Explain
A: When acoustic resonance takes place, the natural frequency of vibration of body is equal to the…
Q: 5. You are designing an airplane propeller that is to turn at 3500rpm (or revolutions per minute).…
A: Given :- Angular speed = 3500 rad/s Angular speed = 3500 × 2 pi /60 Forward air speed of plane…
Q: Oil explorers often set off explosives to make loud sounds, then listen for the echoes from…
A: The speed of sound in water(V1) is 1480 m/s and the speed of sound in granite(V2) is 6000 m/s.…
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