The initial intensity of an ultrasonic wave is 8 mWatts/cm2. Answer the following questions (don’t forget the units). Use this statement for questions the four following questions: 1-Intensity is being reduced by 9 dB__________ 2-Intensity is being reinforced by 3 dB________ 3-What is the RIC if the transmitted intensity is 5 mWatts/cm2? a) 100 % b) 3 mWatts/cm2 c) 37,5 % d) 37,5 dB 4-The intensity is being reduced to 4 mWatts/cm2 when the sound has travelled 8 cm. Which of the following values best represent the half value layer thickness? a) 8 dB b) 8 mWatts/cm2 c) 80 mm d) 4 cm
Posted on: Tue, 25 Jun 2013 02:49:28 +0000
Trending Topics
Recently Viewed Topics
© 2015