Calculate: $\ln(0.35) pprox -1.0498$, $\ln(2) pprox 0.6931$, so $t pprox rac1.04980.6931 \cdot 5730 pprox 1.5147 \cdot 5730 pprox 8679$. - Portal da Acústica
Mar 01, 2026
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