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katen-ka-za [31]
2 years ago
12

Two people hear a tornado siren, but one listener is 81.9 times farther away from the source of the sound than the other. What i

s the intensity level of the sound (in decibels) for the more distant listener relative to that for the nearer listener
Physics
1 answer:
Stolb23 [73]2 years ago
3 0

-38.26dB is the intensity level of the sound for the more distant listener relative to that for the nearer listener

By using the <u>inverse square law,</u>

<u />

As one listener is 81.9 times farther away from the source of the sound than the other.

Then Increasing the distance by 81.9 times reduces the intensity by

81.9^{2} = 6707.61 times

The intensity level of the sound (in decibels) for the more distant listener relative to that for the nearer listener is:

= 10log(ratio of intensities)

= 10log(1/6707.61)

= 10log(0.000149)

=10 × -3.826

= -38.26dB (The negative sign represents the sound is less intense for the farther listener)

So, the intensity level of the sound (in decibels) for the more distant listener relative to that for the nearer listener is -38.26dB

Learn more about Intensity of sound here brainly.com/question/17062836

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If a player through a basketball to the target with an initial velocity of 17 m/s making an angle of 30 degrees with the horizon
Svetllana [295]

Answer:

The final position made with the vertical is 2.77 m.

Explanation:

Given;

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time of motion, t = 1.3 s

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Y_f = V_yt  - \frac{1}{2}g t^2\\\\Y_f = (8.5 \times 1.3 ) - (\frac{1}{2} \times 9.8 \times 1.3^2)\\\\Y_f = 11.05 \ - \ 8.281\\\\Y_f = 2.77 \ m

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3 0
2 years ago
Calculate the kinetic energy in joules of a 1,500 kg car that is moving at a speed of 42 km/h
Rzqust [24]
Data:
KE (Kinetic Energy) = ? (Joule)
m (mass) = 1500 Kg 
v (speed) = 42 Km/h
converting to m/s (42 / 3.6), we have: v (speed) = 11.6 m/s

Formula:
K_{E} =   \frac{1}{2} m*v^2

Solving:
K_{E} = \frac{1}{2} m*v^2
K_{E} =  \frac{1}{2} *1500*(11.6)^2
K_{E} = \frac{1}{2} *1500*134.56
K_{E} =  \frac{201840}{2}
\boxed{\boxed{K_{E} = 100920\:Joule}}\end{array}}\qquad\quad\checkmark





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3 years ago
Semi-conductors are materials that
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Good morning, Jesusperez7!

Semi-conductors are materials that have insulator and conductor properties. 

Thank you for choosing Brainly for your tutoring site, and I hope you enjoy your experience here!


6 0
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