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Rufina [12.5K]
3 years ago
5

A single sports fan is capable of yelling at an intensity level of 80 decibels from a given distance. If 10,000 similar fans wer

e all yelling from the same distance, which of the following will be the closest to the observed intensity level?
(A) 84 decibels
(B) 120 decibels
(C) 160 decibels
(D) 320 decibels
Physics
1 answer:
AleksandrR [38]3 years ago
7 0

Answer:

The correct answer is part 'c' 160 dB

Explanation:

When noise levels of different intensities are superimposed the resultant intensity is given by the equation

L_{avg}=20log(\frac{1}{N}\sum_{i=1}^{N}(10^{\frac{L_{i}}{20}}))\\

where,

L_{i} is the intensity of a general sound level

Since we have 10000 fans each producing sound of 80dB thus the resultant intensity is given using the above formula as

L_{avg}=20log(\frac{1}{10000}\sum_{i=1}^{10000}(10^{\frac{80}{20}}))\\

\therefore L_{eq}=160dB

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Potential Energy (PE) is the energy the body posses by virtue of its vertical height above the ground because, once the body is released, it will release or create some energy eg hydroelectricity power generation or a car going downhill does not need to be accelerated by the driver since it can roll over on its own due to PE

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inysia [295]

Answer:

F'=1/9*F0

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F'=\frac{1}{9}G\frac{m_1m_2}{r^2}=\frac{1}{9}F_0

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4 years ago
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Which type of rock would form from a lava following a volcanic eruption
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Please help me asap with all I’ll mark you brainly
Ilia_Sergeevich [38]

The point that represents maximum potential energy is W.

The point that represents potential energy at 0 joules is Z.

The point that represents potential energy at 50 percent is Y.

The point that represents maximum kinetic energy is X.

Potential energy is the energy held through an object because of its function relative to other items, stresses inside itself, its electric-powered fee, or different elements. potential energy is energy this is saved – or conserved - in an object or substance. This saved energy is based totally on the position, arrangement, or state of the object or substance.

Potential energy refers to the stored energy within an object that exists because of the item's role, country, or arrangement. Potential energy is the strength this is stored in an item because of its function relative to some 0 roles. An item possesses gravitational capability strength if it is located at a top above (or beneath) the zero top.

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1 year ago
A mercury manometer is connected on one side to a bulb containing argon, while the other end is open to atmospheric pressure, wh
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Answer:

740, mm of Hg

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