Physical Education > QUESTIONS & ANSWERS > swers, 100%Accurate. Rated A When the ELASTICITY of a medium is HIGH, the _____ is HIGH - stiffness (All)

swers, 100%Accurate. Rated A When the ELASTICITY of a medium is HIGH, the _____ is HIGH - stiffness

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swers, 100%Accurate. Rated A When the ELASTICITY of a medium is HIGH, the _____ is HIGH - stiffness - prop. speed - compressibility - reflectivity - ✔✔compressibility What term describes ... the # of cycles that an acoustic variable completes in a second? - period - freq. - PRP - variable rate - ✔✔freq. What happens to venous flow return to the HEART when a person INHALES? - ✔✔increases What establishes the freq. of an US wave? - transducer - medium through which sound travels - both - neither - ✔✔transducer Which of the following tasks is NOT performed by the receiver of an US sx? - rectification - smoothing - compression - degaussing - ✔✔degaussing Which of the following is NOT a potential mechanism for the production of bioeffects from US exposure to the body? - temp. elevation - fractionation - cavitation - vibration - ✔✔fractionation Which of the following terms does NOT belong with the others? - increased DOV - increased DF - increased PRP - decreased PRF - ✔✔increased DF Which of the following is NOT one of the physical processes that contributes to attenuation of US waves passing through soft tissue? - reflection - redirection of sound in many directions - focusing - conversion of acoustic energy to heat - ✔✔focusing According to AIUM, at which IN SITU tissue temp. is there danger to a fetus? - 100 C - 98.6 F - 1 F over normal temp. - 41 C - ✔✔41 C 2 sound pulses travel through the SAME medium. One wave's freq. is 2 MHz and the other 10 MHz. Which pulse has a LOWER PROP. SPEED? - 10 MHz pulse - 2 MHz pulse - neither - cannot be determined - ✔✔neither What is the SMALLEST part of a DIGITAL picture called? - bit - byte - pixel - fractal - ✔✔pixel SPL is _________ related to PD - ✔✔directly AXIAL resolution is determined by - mult. reflections - beam width - attenuation - SPL - ✔✔SPL What happens to the DIAPHRAGM when a person INHALES? - ascends into the thorax - descends into the abd - ✔✔descends into the a [Show More]

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