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Physics, 05.07.2019 06:10 Theresab2021

Atrain whistle has a sound intensity level of 70. db, and a library has a sound intensity level of about 40. db. how many times greater is the sound intensity of the train whistle than that of the library?

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Atrain whistle has a sound intensity level of 70. db, and a library has a sound intensity level of a...
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