The loudness level of a sound, D, in decibels, is given by the formula D = 10 log ( 10 12 I ) , where 1 is the intensity of the sound, in walls per meter 2 . Decibel levels range from 0, a barely audible sound, to 160, a sound resulting in a ruptured eardrum. (Any exposure to sounds of 130 decibels or higher puts a person at immediate risk for hearing damage.) Use the formula to solve Exercises 117-118. The sound of a blue whale can be heard 500 miles away, reaching an intensity of 6.3 × 10 6 watts per meter 2 . Determine the decibel level of this sound. At close range, can the sound of a blue whale rupture the human eardrum?
The loudness level of a sound, D, in decibels, is given by the formula D = 10 log ( 10 12 I ) , where 1 is the intensity of the sound, in walls per meter 2 . Decibel levels range from 0, a barely audible sound, to 160, a sound resulting in a ruptured eardrum. (Any exposure to sounds of 130 decibels or higher puts a person at immediate risk for hearing damage.) Use the formula to solve Exercises 117-118. The sound of a blue whale can be heard 500 miles away, reaching an intensity of 6.3 × 10 6 watts per meter 2 . Determine the decibel level of this sound. At close range, can the sound of a blue whale rupture the human eardrum?
Solution Summary: The author calculates the decibel level of the sound of blue whale and whether it can rupture the human eardrum.
The loudness level of a sound, D, in decibels, is given by the formula
D
=
10
log
(
10
12
I
)
,
where 1 is the intensity of the sound, in walls per meter2. Decibel levels range from 0, a barely audible sound, to 160, a sound resulting in a ruptured eardrum. (Any exposure to sounds of 130 decibels or higher puts a person at immediate risk for hearing damage.) Use the formula to solve Exercises 117-118.
The sound of a blue whale can be heard 500 miles away, reaching an intensity of
6.3
×
10
6
watts per meter2. Determine the decibel level of this sound. At close range, can the sound of a blue whale rupture the human eardrum?
Kate, Luke, Mary and Nancy are sharing a cake. The cake had previously been divided into four slices (s1, s2, s3 and s4). The following table shows the values of the slices in the eyes of each player. What is fair share to nancy?
S1
S2
S3
S4
Kate
$4.00
$6.00
$6.00
$4.00
Luke
$5.30
$5.00
$5.25
$5.45
Mary
$4.25
$4.50
$3.50
$3.75
Nancy
$6.00
$4.00
$4.00
$6.00
Kate, Luke, Mary and Nancy are sharing a cake. The cake had previously been divided into four slices (s1, s2, s3 and s4). The following table shows the values of the slices in the eyes of each player.
S1
S2
S3
S4
Kate
$4.00
$6.00
$6.00
$4.00
Luke
$5.30
$5.00
$5.25
$5.45
Mary
$4.25
$4.50
$3.50
$3.75
Nancy
$6.00
$4.00
$4.00
$6.00
how much is the cak worth to mary
Kate, Luke, Mary and Nancy are sharing a cake. The cake had previously been divided into four slices (s1, s2, s3 and s4). The following table shows the values of the slices in the eyes of each player. What is the threshold of fair share for Luke?
S1
S2
S3
S4
Kate
$4.00
$6.00
$6.00
$4.00
Luke
$5.30
$5.00
$5.25
$5.45
Mary
$4.25
$4.50
$3.50
$3.75
Nancy
$6.00
$4.00
$4.00
$6.00
Chapter 4 Solutions
Blitzer Algebra And Trigonometry, 6th Edition, 9780134585291, 0134585291, 2018
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