2. Look up an approximate value for the speed in air (at a temperature of 20°C) for 49 kHz ultrasound. [Hint: Ultrasound is still sound, so you will need to search for the velocity of sound at different frequencies in the CRC Handbook available from TTU Library-3rd Floor, call number: QD65 .H3 or online.] Record your value in m/s and give the source of your information. Photocopy the page from which you gọt your information and include it when you turn in your preliminary questions. Alternatively, you can take a picture and print it out.

2. Look up an approximate value for the speed in air (at a temperature of 20°C) for 49 kHz ultrasound. [Hint: Ultrasound is still sound, so you will need to search for the velocity of sound at different frequencies in the CRC Handbook available from TTU Library-3rd Floor, call number: QD65 .H3 or online.] Record your value in m/s and give the source of your information. Photocopy the page from which you gọt your information and include it when you turn in your preliminary questions. Alternatively, you can take a picture and print it out.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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3 rces The sound of normal breathing is not very loud, with an intensity of about 11 dB at a distance of 1 m away from the face of the breather. Note that in this problem sound intensity in decibels is denoted 3; intensity in W/m² is denoted I View Available Hint(s) distance Ddetect in meters. Ddetect = 3.16 m Submit Previous Answers ✓ Correct Part B In general, if a sound has intensity of 3 dB at 1 m from the source, at what distance de from the source would the decibel level decrease to 0 dB? Since the limit of hearing is 0 dB this would mean you could no longer hear it. Express the distance in terms of B. Be careful about your signs! View Available Hint(s) Submit IVE] ΑΣΦ do 3.55 3 Previous Answers X Incorrect; Try Again; 5 attempts remaining < Return to Assignment Provide Feedback P Pearson m Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us |