For the following exercises, solve for the indicated value, and graph the situation showing the solution point. The formula for measuring sound intensity in decibels D is defined by the equation D = 10 log ( I I 0 ) , where I is the intensity of the sound in watts per square meter and I 0 = 10 − 12 is the lowest level of sound that the average person can hear. How many decibels are emitted from a jet plane with a sound intensity of 8.3 ⋅ 10 2 watts per square meter?
For the following exercises, solve for the indicated value, and graph the situation showing the solution point. The formula for measuring sound intensity in decibels D is defined by the equation D = 10 log ( I I 0 ) , where I is the intensity of the sound in watts per square meter and I 0 = 10 − 12 is the lowest level of sound that the average person can hear. How many decibels are emitted from a jet plane with a sound intensity of 8.3 ⋅ 10 2 watts per square meter?
For the following exercises, solve for the indicated value, and graph the situation showing the solution point.
The formula for measuring sound intensity in decibels D is defined by the equation
D
=
10
log
(
I
I
0
)
,
where I is the intensity of the sound in watts per square meter and
I
0
=
10
−
12
is the lowest level of sound that the average person can hear. How many decibels are emitted from a jet plane with a sound intensity of
8.3
⋅
10
2
watts per square meter?
The Ritcher scale measures the intensity, or magnitude, of an earthquake. The formula for the magnitude R of an earthquake is R = log (a/t) + B, where a is the amplitude in micrometers of the vertical motion of the ground at the recording station, T is the number of seconds between successive seismic waves, and B is an adjustment factor that takes into account the weakening of the seismic wave as the distance increases from the epicenter of the earthquake. Find an earthquake’s magnitude on the Ritcher scale if a recording station measure an amplitude of 300 micrometers and 2.5 seconds between waves. Assume that B is 4.2. Approximate the solution to the nearest tenth.
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Linear Equation | Solving Linear Equations | What is Linear Equation in one variable ?; Author: Najam Academy;https://www.youtube.com/watch?v=tHm3X_Ta_iE;License: Standard YouTube License, CC-BY