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Burka [1]
4 years ago
5

The sound level produced by one singer is 76.7 dB. What would be the sound level produced by a chorus of 41 such singers (all si

nging at the same intensity at approximately the same distance as the original singer)? Answer in units of dB.
Physics
1 answer:
MatroZZZ [7]4 years ago
6 0

Answer:

In dB intensity will be equal to 159.74 dB

Explanation:

We have given intensity of sound produced by one singer is 76.7 dB

Sound intensity is calculated as I(dB)=10log\frac{I}{10^{-12}}

76.7=10log\frac{I}{10^{-12}}

10^{7.67}=\frac{I}{10^{-12}}

I=4.677\times 10^{-5} W/m^2

Now it is given that 41 singers are singing in chorus

So total intensity = I=41\times 4.677\times 10^{-5}=191.757\times 10^{-5}W/m^2

Now in dB intensity will be

I(dB)=10log\frac{191.757\times 10^{-5}}{10^{-12}}=159.74dB

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So here when we connect the fan with electricity it uses the electrical energy and convert that energy into mechanical energy of fan

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8 0
4 years ago
A car is traveling at a speed of 37 m/s.
Vika [28.1K]

1. The speed in kilometers per hour (Km/h) is 133.2 Km/h

2. Yes, the speed is exceeding the 125 Km/h limit

<h3>How to convert 37 m/s to Km/h</h3>

From the question given above, the following data were obtained:

  • Speed (in m/s) = 37 m/s
  • Speed (in Km/h) =?

We can convert 37 m/s to kilometers per hour (Km/h) by doing the following:

1 m/s = 3.6 Km/h

Therefore,

37 m/s = 37 × 3.6

37 m/s = 133.2 Km/h

Thus, 37 m/s is equivalent to 133.2 Km/h

<h3>2. How to determine if the speed is exceeding the limit</h3>
  • Speed of car = 133.2 Km/h
  • Speed limit = 125 Km/h

From the above, we can see that the speed of the car is greater than the speed limit.

Thus, we can conclude that the speed of the car is exceeding the speed limit.

Learn more about conversion:

brainly.com/question/10893215

#SPJ1

3 0
2 years ago
Which of the Moon’s positions will cause the highest or spring tides?
Bess [88]

The correct answer is A and C

During a Spring Tide, it will be horizontal, and a Neap tide is vertical

Brainliest plz!


8 0
3 years ago
Read 2 more answers
The interaction of air,water,and ____ results in weather
kari74 [83]

Answer:

Heat

Explanation:

This combo can cause weather such as tornados,hurricanes and storms.

6 0
4 years ago
He electron cloud is the predicted location for
DanielleElmas [232]

Answer:

A) Electrons only

Explanation:

In quantum mechanics, "electron cloud" refers to the region of space where electrons can be found in an atom. In fact, in quantum mechanics, it is not possible to predict the exact position of the electrons, so there is a region where electrons have a certain probability to be found.

7 0
3 years ago
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