Concept explainers
(>Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation topically require integrating Or extending the concepts presented thus far.)
. You can buy a measuring device billed as a "sonic tape measure." Describe how a device equipped with an (ultrasonic) speaker, a microphone, and a precision timer could be used to measure the distance from the device to a wall (for example).
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- What is the difference between propagation speed and the frequency of a mechanical wave? Does one or both affect wavelength? If so, how?arrow_forward(a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the distance to the epicenter of the quake, geologists compare the arrival times of S- and P-waves, which travel at different speeds. If S- and P-waves travel at 4.00 and 7.20 km/s, respectively, in the region considered, how precisely can the distance to the source of the earthquake be determined? (b) Seismic waves from underground detonations of nuclear bombs can be used to locate the test site and detect violations of test bans. Discuss whether your answer to (a) implies a serious limit to such detection. (Note also that the uncertainty is greater if there is an uncertainty in the propagation speeds of the S- and P-waves.)arrow_forwardSolve the following problems. Provide the Given, Required, Equation, Solution, and Answer A wave has frequency of 60 Hz and a wavelength of 15 m. What is the speed of the wave? A wave has wavelength of 20 m and a speed of 640 m/s. What is the frequency of the wave?arrow_forward
- Suppose a bat uses sound echoes to locate its insect prey, 3.00 m away. (a) Calculate the echo times for temperatures of 5.00ºC and 35.0ºC .(b) What percent uncertainty does this cause for the bat in locating the insect? (c) Discuss the significance of this uncertainty and whether it could cause difficulties for the bat.(In practice, the bat continues to use sound as it closes in, eliminating most of any difficulties imposed by this and other effects, such as motion of the prey.)arrow_forwardThe highest frequency that we can hear is about 20 kHz (2x 10^4Hz). a) Calculate the wavelength (m) associated with this frequency for sound that travels at 345 m/s. b) How long is this in feet? (Roundanswers to the nearest tenth.arrow_forwardIf the sound is travelling at 287m/s, what is the temperature of the area?? Paragraph B T U varrow_forward
- Show the complete solution to the following problem. At one atmospheric pressure and at a temperature of 0°C, the speed of sound in air is 33, 145 cm/s. This speed increases by 60 cm/s for each degree centigrade rise in temperature. Determine the speed of sound in air in Sl units at an altitude of 12.5 miles above sea level where the temperature is -62 °F.arrow_forwardNeed help with this problem, I just posted on here a few minutes ago and the answer I got was wrong but I couldn't comment or anything to the person who answered it. Please read carefully and answer in the right form, the way it was asked for all three parts with work.arrow_forwardQ.No.3: Write a note, one by one, on all the features in “Radio Stack” of Cessna-172.arrow_forward
- Should include the future from 'be going to'((((((((((((check the grammar for me pls.)))))))))- you can compose or compare it for me -arrow_forwardThis question involves some coding. We are using Juypter Lab to do our coding. If the coding cannot be done that is fine as I would just use that part to see how others do the coding (like tricks and special commands). Otherwise just solving the equations as needed would be fine. Thanks!arrow_forwardcannon is fired some distance away from you, and you wishto estimate that distance by determining how much soundenergy enters your ear. (a) How does the sound energydepend on the distance between the cannon and your ear?(b) Now you use the dependence you described in part a tojudge how far away the cannon is. First you estimate the distanceassuming that none of the energy in the sound wavesis dissipated (into, say, random motion of the molecules thatmake up the air), and then you repeat the estimate assumingthat some of the sound energy is dissipated. Is your first estimatehigher or lower than your second estimate?arrow_forward
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
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