You are trying to hear your friend give directions to new store in town. but from your distance (1 point) of 15 m you only hear a whisper of about 20 db intensity. you move closer to bring the conversation up to a sound level of about 50 db. how close do you need to be?
a. 100 cm
b. 333 cm
c. 90 cm
d. 47 cm
Answers: 3
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