A single mosquito 5.0 m from a person makes a sound close to the threshold of human hearing (0 dB). Part A What will be the sound level of 240 such mosquitoes? Express your answer to two significant figures and include the appropriate units. Value Units 2
Q: t A is incorrect the answer is 123m but unsure how that is the answer if you can explain why?
A: H=387 m (initial height of ball and the person) S=36 m/s (constant speed of ride) u=0 (initial…
Q: Which of the following statements are correct? Which one or more? a. The perceived…
A: The perceived loudness of a sound is a subjective measure of how loud a sound seems to a listener,…
Q: A uniform narrow tube 1.60 m long is open at both ends. It resonates at two successive harmonics of…
A:
Q: Draw 2 sets of waves such that the first wave has a lower frequency the Identify the wavelength and…
A: Two sets of waves with different frequencies are shown below
Q: What are the rules to significant figures and what are the conversions in SI? What happens to waves…
A: All the non-zero digits are significant. Example: In 2.4567, the number has 5 significant…
Q: The Doppler effect using ultrasonic waves of frequency 2.23x10 Hz is used to monitor the heartbeat…
A: See below as handwritten
Q: A Doppler blood flow uni 5.8 MHz.
A: Original frequency,Speed of blood,We know thatSpeed of Sound in blood,v= 1570 m/secTo find :What is…
Q: A friend of yours is loudly singing a single note at 391 Hz while racing toward you at 23.8 m/s on a…
A:
Q: Learning Goal: To understand the nature of a sound wave, including its properties: frequency,…
A: A) To explain the sound wave. C) To explain the propagation of human voice in the air. D) To check…
Q: In a big group of people, each one is are talking with the same loudness. If 7575 % of the people…
A: Given data: The formula for the sound intensity is, β=10logII0 The percentage of people stop talking…
Q: A cassette player is said to have a signal-to-noise ratio of 60 dB , whereas for a CD player it is…
A:
Q: A hammer taps on the end of a 3.6-m-long metal bar at room temperature. A microphone at the other…
A: Given: Pulse separation time Δt=8.80ms=0.0088s d=3.6m To find: Speed of sound in this metal
Q: Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a…
A: what is the frequency of the sound?Calculations:
Q: A sound wave in air at 20°C has a frequency of 330 Hz and a displacement amplitude of 5.00×10-3 mm.…
A:
Q: Learning Goal: To learn the properties of logarithms and how to manipulate them when solving sound…
A: A) Solve the provided value.…
Q: You have a stopped pipe of adjustable length close to a taut 62.0 cm, 7.25 g wire under a tension of…
A:
Q: Two speakers are 6.0 m apart and play identical sound of wavelength 5.0 m. Each grid length is 1.0…
A: Required to find the path difference at points P and Q.
Q: A mosquito flaps its wings at a rate of 600 vibrations per second, which produces the annoying…
A: Given : f = 600 Hz v = 340 m/s
Q: The sound intensity level inside a typical modern airliner in flight is 66.0 dB. The air in the…
A: The intensity of the sound = 66 dBThe density = 0.920 kg/m^3The speed of sound = 344…
Q: A guitar string is 90 cm long and has a mass of 3.4 g. The distance from the bridge to the support…
A:
Q: N whistles produce a sound level intensity B. Calculate the sound level intensity produced by one…
A:
Q: The position of a SHO as a function of time is given by x=3.8 cos(5πt/4+π/6) where t is in seconds…
A:
Q: A violin string is 36.0 cm long. It sounds the musical note A (440 Hz) when played without…
A:
Q: A hammer taps on the end of a 4.4-m-long metal bar at room temperature. A microphone at the other…
A:
Q: (Figure 1) is a snapshot graph of a wave at t = 0 s. Figure y (cm) 4 2 -2 -4 24 m/s A 4 8 12 16 20 x…
A: Solution: The wavelength is the distance between the two crests or two troughs from the graph as…
Q: Speakers A and B are vibrating in phase. They are directly facing each other, are 6.91 m apart, and…
A:
Q: Two organ pipes, open at one end but closed at the other, are each 1.10 m long. One is now…
A: Solution:-Given thatLength of first pipe(L1)=1.1 mLength of second pipe (L2)=L1+1.1 cm=1.1 m+0.011…
Q: You have a stopped pipe of adjustable length close to a taut 62.0 cm, 7.25 g wire under a tension of…
A:
Q: Part A What is the speaker's power output if the sound intensity level is 95.0 dB at a distance of…
A:
Q: Two identical loudspeakers separated by distance d emit 150 Hz sound waves along the x-axis. As you…
A:
Q: A guitar string is 90.0 cm long and has a mass of 3.00 g . From the bridge to the support post (= l)…
A: Given : l = 60 cm = 60 x 10-2m T = 527 N m = 3 x 10-3 kg…
Q: A spool of wire 150 m long has a mass of 0.190 kg when weigh on a scale. This string is used to set…
A: Concept: To determine the required spring tension we will use the formula of the fundamental…
Q: A string on an instrument is tuned to vibrate at a fundamental frequency of 56 Hz. If the tension in…
A:
Q: A baseball park is filled with 4400 home-team fans. In the bottom of the ninth inning, the home…
A: Given No.of fans = 4400 Intensity, I = 10-5 W/m2 Total intensity heard by pitching sound, I=…
Q: A 1.0-m-tall vertical tube is filled with 20°C water. A tuning fork vibrating at 580 Hz is held just…
A: To determine the water heights at which a standing wave will occur in the tube above the water, we…
Q: During takeoff, the sound intensity level of a jet engine is 150 dB at a distance of 32 m. Part A…
A:
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
- Need help with part C, please!A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the forward hemisphere, 25% toward the back. You measure an 85 dB sound intensity level when standing 1.0 m in front of and 2.5 m below the speaker. Part A What is the speaker's power output? Express your answer with the appropriate units. ► View Available Hint(s)Learning Goal: To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area on which they are incident. Intensity is measured in watts per square meter, or W/m². The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear has an intensity of 10-12 W/m², and we begin to feel pain when the intensity reaches 1 W/m². Since the intensities that matter to people in everyday life cover a range of 12 orders of magnitude, intensities are usually converted to a logarithmic scale called the sound intensity level 3, which is measured in decibels (dB). For a given sound intensity I, B is found from the equation B = (10 dB) log Io where Io = 1.0 × 10-¹² W/m². The logarithm of x, written log(x), tells you the power to which you would raise 10 to get x. So, if y = log(x), then x = 10%. It is easy to take the logarithm of a number such as 10², because you…
- A 4.50 m long rope is stretched between two supports with a tension that makes the speed of transverse waves 60.0 m/s . For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of A bass string. Part A What is the wavelength of the fundamental tone? Express your answer in meters. ? m %3D Submit Request Answer Part B What is the frequency of the fundamental tone? Express your answer in hertz. ? fi = Hz Submit Request Answer Part C What is the wavelength of the second overtone? Express your answer in meters.A train whistle is heard at 250 Hz as the train approaches town. The train cuts its speed in half as it nears the station, and the sound of the whistle is then 240 Hz. Part A What is the speed of the train before slowing down? Express your answer to two significant figures and include the appropriate units. V1 = Part B Value v2 = What is the speed of the train after slowing down? Express your answer to two significant figures and include the appropriate units. LO μA Units Value ? Units ?Please solve and answer the question correctly please. Be sure to give the correct units.
- Two pianos each sound the same note simultaneously, but they are both out of tune. On a day when the speed of sound is 346 m/s, piano A produces a wavelength of 0.763 m, while piano B produces a wavelength of 0.777 m. How much time separates successive beats? Number i UnitsDuring takeoff, the sound intensity level of a jet engine is 170 dB at a distance of 24 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer to two significant figures and include the appropriate units. B = Submit Value Units Previous Answers Request Answer ?.Negative decibels? Our discussion of decibels did not mention that they can be negative. On the Redmond, Washington campus of Microsoft is an anechoic chamber that, according to Guinness World Records, is the quietest place in the world. It measures –20.3 decibels. a. What is the relative intensity of a sound measuring –1 decibels? Round your answer to one decimal place. b. What is the relative intensity of a sound measuring –10 decibels? Round your answer to one decimal place. c. What is the relative intensity of Microsoft's anechoic chamber? Round your answer to three decimal places. d. Is it possible for the relative intensity to actually be zero?
- Please solve and answer the question correctly please also be sure to have the correct units for the final answer. Thank youA Kundt's tube is filled with helium gas. The speed of sound in helium at 20°C is 999 m/s. A tuning fork that produces sound waves with frequency 1200 Hz is used to set up standing waves inside the tube. You measure the node-to-node distance to be 47.0 cm ▾ Part A What is the temperature of the helium gas in the sube? Express your answer in degrees Celsius. T = VG AZO Submit Request Answer Provide Feedback ? C