11. What is the attenuation of 350 ft of RG-11 U coaxial cable at 100 MHz?
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Start with the formula for calculating decibels (dB): dB = 10 * log10(P2/P1) Show more…
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Review Conceptuat Example 8 as background for this problem. A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker (without reflecting from the walls) create an intensity level of $75.0 \mathrm{~dB}$. The waves reflected from the walls create, by themselves, an intensity level of $72.0 \mathrm{~dB}$ at the same point. What is the total intensity level?(Hint: The answer is not $147.0 \mathrm{dB.}$ )
Review Conceptual Example 8 as background for this problem. A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker (without reflecting from the walls) create an intensity level of 75.0 dB. The waves reflected from the walls create, by themselves, an intensity level of 72.0 dB at the same point. What is the total intensity level? (Hint: The answer is not 147.0 dB.)
Add the following sound pressure levels: a. 90 dB + 87 dB (Use the approximate method) b. 60 dB + 61 dB (Use the exact method) c. 50 dB + 54 dB + 48 dB + 52 dB + 50dB (Use both methods)
Animesh R.
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