Question

What is a vacuum? Describe the intensity of the sound in it.​

Answer 1

Answer:

◆ ▬▬▬▬▬▬ ❴꧁RISHIK꧂❵ ▬▬▬▬▬▬ ◆

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A vacuum is a volume that encloses little or no matter. In other words, it is a region that has a gaseous pressure much lower than that of atmospheric pressure.

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Sound intensity, also known as acoustic intensity, is defined as the power carried by sound waves per unit area in a direction perpendicular to that area. The SI unit of intensity, which includes sound intensity, is the watt per square meter (W/m2). ... Sound intensity is not the same physical quantity as sound pressure.

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◆ ▬▬▬▬▬▬ ❴꧁RISHIK꧂❵ ▬▬▬▬▬▬ ◆

Answer 2

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A vacuum is a volume that encloses little or no matter. In other words, it is a region that has a gaseous pressure much lower than that of atmospheric pressure.

Intensity is the amount of energy a sound wave has per unit of time. Intensity is measured in decibels, represented by dB. Softest sound: 0 dB. Harmful to hearing ≥ 85 dB.

Intensity of sounds

Whisper- 20 dB

Rainfall- 50 dB

Talking normally - 60 dB

Busy city traffic -80 dB

Cheer of crowd at sporting event -90 dB

Headphones at high volume -105 dB

Rock concert - 120 dB