A bookstore sells textbooks for $40 each and notebooks for $2 each. The bookstore would like to sell
1 answer:
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Pyth. theorem
=18.33
=18.3 (corr. to the nearest tenth)
=18.33
=18.3 (corr. to the nearest tenth)
<u>Answer-</u>
<em>A. Brandon’s sound intensity level is 1/4th as compared to Ahmad’s.</em>
<u>Solution-</u>
Given that, loudness measured in dB is
Where,
I = Sound intensity,
I₀ = 10⁻¹² and is the least intense sound a human ear can hear
Given in the question,
I₁ = Intensity at Brandon's = 10⁻¹⁰
I₂ = Intensity at Ahmad's = 10⁻⁴
Then,