Fundamentals of Physics III
Fundamentals of Physics III PHY 103
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This 1 page Class Notes was uploaded by Wilson Gibson V on Monday October 19, 2015. The Class Notes belongs to PHY 103 at Portland Community College taught by Staff in Fall. Since its upload, it has received 10 views. For similar materials see /class/224633/phy-103-portland-community-college in Physics 2 at Portland Community College.
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Date Created: 10/19/15
Phy 103 Fundamentals of Physics III Chapter 20 Worksheet Sound Echoes amp Ultrasound Imaging 1 A device utilizing ultrasound generates a sound wave with frequency of 50x106 Hz The device sends brief sound pulses through the body tissue Measurements of the resultant echoes are used to produce an image sonogram of a person s abdomen The speed of sound in the body is 1540 ms a What is the wavelength of the ultrasonic wave used by this device b Following a single pulse an echo is detected by the monitor 95x10395 seconds later How deep in the tissue is the objectinterface that produced the echo located c How much time would elapse between echoes produced by the front and back of an internal organ that is 0030 m in thickness as measured from the front of the ultrasound transducer transduce d Would it be possible to observe an object of size 01 mm using this ultrasound wave frequency If not what would be the minimum frequency necessary to observe such a an object e How does the speed of sound in air vsound340 ms compare to its speed through the body How might you quantify express it as a number your answer
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