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Aloiza [94]
3 years ago
11

Why are Big cinema hall are carpeted and their walls are made of some rough materials​

Physics
1 answer:
Vadim26 [7]3 years ago
8 0

Answer:

because these materials absorb the sound and do not allow them from going out of as, some times the sound can be a trouble to the people.

Explanation: Hope this helps!

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Decreasing the temperature of a reaction decreases the reaction rate because
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D) decreasing the temperature lowers the average kinetic energy of the reactants.
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Earth attracts a person with a gravitational force of 7.0 × 102 newtons. What is the magnitude of the force with which the indiv
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Read 2 more answers
Two identical loudspeakers 2.00 m apart are emitting sound waves into a room where the speed of sound is 340 m/s. Abby is standi
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Answer:

The lowest possible frequency of sound is 971.4 Hz.

Explanation:

Given that,

Distance between  loudspeakers = 2.00 m

Height = 5.50 m

Sound speed = 340 m/s

We need to calculate the distance

Using Pythagorean theorem

AC^2=AB^2+BC^2

AC^2=2.00^2+5.50^2

AC=\sqrt{(2.00^2+5.50^2)}

AC=5.85\ m

We need to calculate the path difference

Using formula of path difference

\Delta x=AC-BC

Put the value into the formula

\Delta x=5.85-5.50

\Delta x=0.35\ m

We need to calculate the lowest possible frequency of sound

Using formula of frequency

f=\dfrac{nv}{\Delta x}

Put the value into the formula

f=\dfrac{1\times340}{0.35}

f=971.4\ Hz

Hence, The lowest possible frequency of sound is 971.4 Hz.

8 0
3 years ago
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