![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
Which is the fastest speed of sound in water or air?
Water fast
What is the speed of sound in the air (15 degrees)____ m/s What about other temperatures?
340 this is the measured data method 1. Method 1: after a sound is generated, it will not immediately reach your ears. It usually takes a period of time. Unless you have this experience, it is difficult to understand. For example, if you participate in a sports meeting and sit at a distance from the person who fired the gun, you will see the gun first
Air, steel plate, water, where is the fastest sound transmission?
In general, V solid > V liquid > V gas. Therefore, V steel > V water > V air. The propagation of sound requires substances, which are called media in physics. The propagation speed of sound in different media: Vacuum 0m / S (i.e. unable to propagate) air (15 ℃) 340m / S air (25 ℃) 346m / s Cork 50
Why does sound travel slowly in the air and fast in steel
The transmission of sound must be completed by the medium. Both air and steel belong to the medium, but there is a characteristic here, that is, sound travels faster in solid than in gas, which may be due to the high solid density and low gas density. Air belongs to gas and steel belongs to solid, so we can know that "sound travels faster in steel than in air"
In which object does air travel fastest? A in air B in water C in vacuum D in steel
D
Speechless ing: sound spreads in air, water, vacuum and steel, A air B water C vacuum D steel Is it vacuum or air? Vacuum can't transmit sound, so there's no speed, so you should choose a But it can also be said that if the speed is 0, choose C
During my internship, I corrected this problem in batches, choosing an a
The problem is not good. I told the students at that time. So it's OK to know how to do the problem
This will not happen in the middle school entrance examination!
RELATED INFORMATIONS
- 1. Sound travels in air, water, vacuum and steel. Is air or vacuum the slowest?
- 2. Measure the length of the railway. The propagation speed of sound in air and steel is 340m / s and 5000m / s. one person knocks and one person hears it twice, with an interval of 2S. Calculate the length of the railway
- 3. Suppose the sound propagation speed in the air is 340m / s and in the steel is 1500m / s. one person hits one end of the iron bridge with a hammer and the other person hears two sounds at the other end with a difference of 0.5 seconds. What is the length of the iron bridge? If there is an obstacle at one end of the bridge, how many echoes can the hammerer hear?
- 4. It is known that the propagation speed of sound in the air is 340 meters per second and 5200 meters per second in the rail. To measure a section of rail, the time interval is 1.5 seconds
- 5. The length of the train is l, and the length of the railway bridge is also L. the train accelerates evenly along the straight track to cross the bridge. The speed of the front passing the bridge head is V1, and the speed of the front passing the bridge tail is V2, so the speed of the rear passing the bridge tail is () A. v2 B. 2v2-v1 C. v12+v22 two D. 2v22−v12
- 6. The two trains, car a and car B, are 200 meters long and 280 meters long. They run opposite each other on parallel tracks. It is known that after 40 seconds from the head of car a catching up with the tail of car B to the departure of the two cars, the speed ratio of car a and car B is 5:3. What is the speed of the two cars? I want a univariate equation!
- 7. Log4 under root log3 under root log2 512
- 8. [(log4) ^ 3 + (log8) ^ 3] [(log3) ^ 2 + (log9) ^ 2] = how many
- 9. 3 / 2 log3 is the logarithm of base 0.6, log2 is the third power of base radical 24, log4 is the logarithm of base 5, and log5 is the logarithm of base 4
- 10. 0
- 11. Math problems in Volume 1 of Grade 8 - if 2N-1 power of 3 + n power of 9 = 108, find the n power of (2n-2)
- 12. The two trains of Party A and Party B run at a constant speed on two parallel tracks. The length of vehicle a is 300m, the speed is 20m / s, the length of vehicle B is 250m, and the speed is 30m / S! The two trains of Party A and Party B run at a constant speed on two parallel tracks. The length of vehicle a is 300m and the speed is 20m / s, and the length of vehicle B is 250m and the speed is 30m / s. calculate: (1) the time of overtaking (2) the time of passing
- 13. What is the calculation result of the 2011 power of (- 8) + the 2012 power of (- 80)? What are the methods
- 14. How much is the - 1 power of a to the - 2 power of a
- 15. How to find the derivative of trigonometric function? (sin ^ 2x) 'is the square of sin. How to find this? Similarly (COS ^ 2x) 'how to find this?
- 16. How many meters per second does sound travel through the air?
- 17. The train passes through a 2700 meter long bridge. It takes 3 minutes from the front of the train to the rear of the train. It is known that the speed of the train is 1000 meters per minute. How long is the train body?
- 18. Train a and train B are traveling at the speed of 54 km / h and 36 km / h respectively On a straight railway track, trains a and B run in opposite directions at the speed of 54 km / h and 36 km / h respectively. A bird flies from the front of car a at the speed of 20 m / s, flies back to the front of car B immediately, flies back to the front of car a, turns back and flies back to car B immediately, and so on until the two cars meet. It is known that the total flight distance of birds is 400 meters, At the beginning, when the bird flies out from the front of car a, the distance between the two heads is A. 500m b.600m c.300m D. unable to judge
- 19. The train took 26 seconds to pass through a 256 meter long tunnel (i.e. from the front of the train entering the entrance to the rear of the train leaving the exit). At this time, the train passed through a 96 meter long tunnel in 16 seconds. Find the length of the train
- 20. What is the source of train centripetal force? Is it the support of the inner rail or the outer rail