What would happen to our world if the speed of sound changed to 0 1m s .

The speed of the sound becomes: 1People will evolve not to listen to sound with their ears, because sound is no longer useful.

2.A traffic accident will kill everyone.

3.Listen to ** use wireless headphones, otherwise ** will end up you are still listening.

It's going to be hard for two people to have a conversation.

The sound of the airliner at an altitude of 10,000 meters in Layan came, and the plane was no longer visible.

Because the speed of transmission is so slow, everyone hears it at a different time. People talk more slowly. Because Zhao Wang said a word, the other party had to wait for half a day before he heard it. Watching a TV show, the sound is out of sync with the action. The clan bureau is still because the sound travels too slowly.

The speed of supersound is 340 meters per second, and the speed of less than 340 meters per second is called subsonic, which is equal to the speed of 340 meters per second for the speed of transpersonic, and the speed of sound will vary depending on the temperature or pressure. Hypersonic.

Definition: Speeds greater than 5 times the speed of sound are generally considered to be hypersonic.

It's when the teacher says something in class, even if you sit in the classroom, it will take a long time to hear it

If the speed of sound propagation in the air is meters and seconds, which is less than the normal walking speed of a person (about 1 m s), then the person who hears the sound (when the person moves close to the sound source) will lag behind the sound by a mountain attack, and the handling of the incident will be meaningless. Or the person cannot hear the sound of the group at all (when the person moves away from the sound source).

Someone fell into the water and shouted for help, and when people heard it, it was so abrasive that the person had drowned.

The class bell rings, and it takes a long time for people who are far away from the classroom to hear it.

When the guns go out in the sports meeting, the people at the finish line don't start to remember the time until they hear the gunshot and the results will be unreal.

When a fire friend is in the event of a disaster, he calls for help, and people from afar cannot be heard in time.

The horn of the car will not be able to perform its original role. When we heard the sound of a passenger plane coming from an altitude of 10,000 meters, we could not see the plane.

A. Suppose that the student is 6m away from the teacher, and the teacher makes a sound, the student can only hear it after 6s, and it will not be clearer, so A is wrong;

B. The horn of the car propagates too slowly and can no longer play the original role, so B is correct;

c. The speed of sound propagation in the air becomes 1 meter second, which is 1340 at normal times, and the band's performance in the venue will become very chaotic, so C is correct;

D. The sound of the passenger plane came, and the plane could not be seen for a long time, so D was correct so choose A

1. The sound will only come after many objects pass by you. Most animals travel at supersonic speeds, and sonic booms are everywhere.

2. The echo oscillation frequency of holes and holes decreases.

3. Because the speed of sound is too slow, the animal's hearing cannot catch up with the behavior, and after several years, the articulatory organs and auditory organs gradually degenerate or even disappear.

1.Traffic accidents will occur frequently, because honking is useless, and the car arrives before the sound;

2.It becomes difficult for people to communicate with each other because they have to wait a long time to hear a voice after they speak;

3.People's activities will cease because people will become bored when they listen.

If the speed of light remains the same, you will see the action first, and then hear the sound.

Why is there such a question in the junior high school answering oak sparrow?

I wrote at the time: When watching TV, there will be a big gap between the image and the sound, and the sound is not right, and no matter how good the drama is, it will not come out.

There's another one.,It seems to be written when I was scolded by the teacher.,The gestures of the old morning teacher and the words he heard will not taste right.。。。

The two people were 1 meter apart, and it was thought that it would take 10 seconds to hear each other's words. If it's farther away, it takes longer, so people can't communicate properly.

If your classroom is 10 meters long, it will take 100 seconds, or 1 minute and 40 seconds, for the students sitting in the last row to hear the teacher speak. People can't live a normal life.

When people hit the **, the sound they hear will also be slower.

Traffic was in a state of chaos.

It takes a long time for you to hear the thunder after you see the lightning digging in a posture, maybe the sky has cleared, but the thunder is still rumbling, hehe.

In short, if the speed of sound is, our life is not the current life, and the rhythm of people's lives will be greatly affected, and it may not be able to proceed normally.

Answer: A: If "the speed of the sound changes, then two people talking opposite each other will not be heard until some time; Thunder can only be heard for a long time after the lightning; It was a long time after the starting pistol smoked before the athletes started