How loud is 56 decibels? Give examples. Be more specific.

How loud is 56 decibels? Give examples. Be more specific.

100 decibels for a tractor driving

90 decibels for a very noisy road

80 decibels for a normal vehicle driving

70 decibels for talking loudly

60 dB for general speech

50 dB for office

40 dB for library, reading room

30 dB for bedroom

20 How loud is a whisper of 70 decibels? Can you give an example?

70 decibels speaking loudly. How loud is 15 decibels? Here are some examples.

80 decibels: The sound of a shrimp chewing food 100 meters away, heard underwater by a nuclear submarine's microphone

-30 decibels: The sound of a person talking 20 miles away

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0 dB: A mosquito is flying 10 feet away

10 dB: A very quiet room

13 dB: The buzz of a light bulb

15 decibels: the sound of a pin falling from a height of 1 centimeter 1 meter away

20 decibels: country night

30 decibels: desert night

40-60 decibels: the sound of normal conversation

50-53 decibels: the sound of the washing machine

60-80 decibels: passing by 10 meters away

70 decibels: A vacuum cleaner 10 feet (about 3 meters) away; the maximum noise that the U.S. Environmental Protection Agency determines humans can tolerate (without causing hearing loss, sleep disorders, anxiety, learning disabilities, etc.)

85 decibels: Can cause hearing loss in the long term

90 decibels: Passing bus or truck 10 feet (about 3 meters) away; food mixer

100 decibels: the maximum volume of a typical home audio device

104-107 decibels: the sound that begins to cause pain (at a frequency of 2750Hz)

110-140 decibels: A jet engine 100 meters away

116 decibels: The human body begins to feel the vibrating sound (at low frequencies)

120-130 decibels: The front row of a rock concert< /p>

127 decibels: The sound that begins to cause tinnitus

128 decibels: The loudest human scream measured at 8.2 feet (about 2.5 meters)

140 Decibel: Even a short duration of sound can cause hearing damage

141 decibel: The sound that starts to cause nausea

168 decibel: M1 Garand rifle fired from 1 meter away< /p>

175.8 decibels: 1 ton of TNT explosive explodes 250 feet (about 75 meters) away

192.8-194.7 decibels: The maximum intensity of sound that the earth’s atmospheric pressure can theoretically propagate. An example of how big a million is.

A brand-new RMB worth 1 million yuan weighs about 12 kilograms and has a volume of about 1 cubic meter.

One million people weigh about 60,000 tons, or about 60,000 cubic meters. There are only so many people in a medium-sized city, such as Luoyang and Handan.

One million drops of water is 60,000 milliliters, equivalent to 109 bottles of mineral water.

One million steps is equivalent to 500 kilometers, equivalent to one-quarter of the 25,000-mile Long March.

The area of ??1 million trees is about 10 million square meters, which is 15,000 acres of land.

One million blue whales weigh approximately 180 million tons.

One million *** is just one drop. Give an example of how big 1 million is: ______

Give an example of how big 1 million is: The area of ??1 million trees is about 10 million square meters, which is 15,000 acres of land,

So the answer is: The area of ??1 million trees is about 10 million square meters, which is 15,000 acres of land.

How loud is one decibel?

Decibel is a unit of sound pressure level, recorded as dB, used to express the measurement unit of sound (the size of the sound).

The sound that the human ear can just hear is 0-10 decibels. Every 10 decibel value increase means that the volume increases by 10 times.

That is, from 1 to 20 decibels, it means that the volume increases by 100 times.

0~20 decibels, very quiet, almost unnoticeable.

? 20 to 40 decibels, equivalent to speaking softly.

40 to 60 decibels, equivalent to ordinary indoor conversation.

60 to 70 decibels, which is equivalent to shouting and damaging to the nerves.

70 to 90 decibels, very noisy, noisy street sound.

Can you give me an example of how loud 30 decibels is?

Probably the sound that can make you fall asleep is very soft. Can you give an example of how big is 10,000? How big is 100 million?

It takes you counting from the beginning to count one hundred million per second. It took more than three years to count 10,000 in only 3 hours. How big are 1CM and 2CM? Please give examples respectively

The width of the index finger is about 1cm, and the width of the two index fingers is about 2cm

Please adopt it, thank you!