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Diagnostic ultrasound of frequency 4.50 MHz is used to examine tumors in soft tissue.
(a) What is the wavelength in air of such a sound wave?
m
(b) If the speed of sound in tissue is 1900 m/s, what is the wavelength of this wave in tissue?
The range of human hearing is roughly from twenty hertz to twenty kilohertz. what are the lengths of the longest and shortest pipes
A charge of -2.85 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass, which has a radius of 0.105 m. The charges on the circle are -3.8 µC at the position due north and +4.55 µC at the position du..
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