help with question 5 Evercises 1. Find the logarithm of 2,100,000 a) 5.3222 b) 6
ID: 1795934 • Letter: H
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help with question 5
Evercises 1. Find the logarithm of 2,100,000 a) 5.3222 b) 6.3222 c) 2.1 x 10 a) 6.0 e) none of these 2 Log x 16021. What is x? a) 51 b) 40.0 c) 2.1x 10 d) 6.0 e) none of the above 3. Find the logarithms of the following numbers. a) 6 b) 4.5 c) 21x 102 d) 5,100,000 e) 265 f 162 x 102 g) 21 x 10* h) 2000 000064 Below are the logarithms of some numbers. Find the value of the numbers. a)logy=24 b) log x 08 c) log z- 9.3 d)log -032 e)log w=-1182 4 S Convert the following intensities to decibels al 1-37 x 104 W/m 6. Several mesurements are taken in a concert hall with electronic equipment. The data recorded by five different meters ate shown below. Which meter recorded the greatest intensity level? a) Meter 1: Area-1.2x10.joules measured in i second b)Mner2:Area 1, 3x 10.joules measured in 2 seconds c) Meter 3: Ares-2, 4x104joules measured in 2 seconds d)Meter 4. Area-3am, 3 x 104 joules measured in 2 seconds e)Meter 5: Area = 4, 6x104joules measured in 1 second 1%Explanation / Answer
dB=10log(I/10^(-12))
5
At I=3.7*10^(-4),dB=85.7dB
At I=2.1*10^(-10),dB=23.2dB
C part is not visible
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