I am in Black Spectacles practice exam right now playing around with the resources and getting familiar with using the calculator. I am having trouble understanding how the "log" button works?! This should be so simple yet I can not figure out how to get the correct answer using the calculator.
Im practicing with example problem 19.2 in the Ballast 5.0 book. The questions is:
A room in an office contains eight machines, each of which produces 73dB of sound. What is the overall sound level?
The equation to use is IL(total) = IL(source) + 10log(n) ... so plugging in the numbers from the example problem I get 73dB + 10log(8)
The answer in the book is 82dB.
When I use the calculator and type 73 + 10log8 it only equals 81 ?!?! How to use use the "log" command properly!? Someone please help me solve this silly thing?! I feel like a total idiot.
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