Sound Intensity

Joined
Jun 27, 2021
Messages
5,386
Reaction score
422
Section 3.2
84 (a - c)

20211016_194417.jpg


For part (a), I simply replace I with 1 and simplify. Yes?

For part (b), I simply replace I with 1/(100) and simplify. Yes?

Can you explain part (c)?

This ends our Section 3.2. We now move on to Section 3.3 or Properties of Logarithms.
 
a, b ->yes

c.
beta=10log(I/10^-12)

intensity of sound in part a is 1 and in part b is 10^-2 =1/100 => (1/100)100=1=> intensity of sound in part a is 100 times greater than intensity of sound in part b

in part a, beta=10log(1/10^-12)=120 decibels
in part b, beta=10log(10^-2/10^-12)=100 decibels=> the number of decibels is not 100 times as great
 
a, b ->yes

c.
beta=10log(I/10^-12)

intensity of sound in part a is 1 and in part b is 10^-2 =1/100 => (1/100)100=1=> intensity of sound in part a is 100 times greater than intensity of sound in part b

in part a, beta=10log(1/10^-12)=120 decibels
in part b, beta=10log(10^-2/10^-12)=100 decibels=> the number of decibels is not 100 times as great

Interesting reply. Thanks. By the way, we are in Chapter 3, Section 3.2. Chapter 4 is Trigonometry. Just giving you a heads up.
 

Members online

No members online now.

Forum statistics

Threads
2,521
Messages
9,844
Members
694
Latest member
FannyTurnb
Back
Top