Method 5 for measuring the speed at which sound travels through water

First, prepare two sets of transceiver devices with the same time. The transmitter generates a specific sound wave as a sound source, and the receiver sensitively receives a specific sound wave from the sound source.

Second, the two sets of devices are separated by a certain distance (s), and the sound source and the receiver are sunk in the same water area opposite each other, and there is no obstacle in the middle.

Third, the time is recorded at the same time as the sound source emits the sound, and the time is recorded at the same time as the receiver receives the sound, and the time difference between the two is the transmission time (t) of the sound wave in the water.

The exact value can be obtained based on the speed of sound v s t.

In an experiment to determine the speed of sound propagation in the water on Lake Geneva, the experimenters drove two boats into the lake, 13,847 meters apart. The experimenter on ship A put a bell into the water, and the ship prepared some gunpowder, and lit the gunpowder on the ship at the same time as the bell rang. The experimenter on boat B placed a sound device into the water to listen to the sound of the bell coming from the water.

As a result of this experiment, the bell was heard about 10 seconds after seeing the flash of gunpowder.

Idea: The speed of light is 3*10 8m s

And the distance is 13847m

So the time it takes for a person to see the light t1=

It can be disregarded.

Conclusion: V sound = 13847 10 =

That's how it was measured.

There are many, as long as you find a way to measure the distance s s that sound travels through the water, and the time it takes to travel this distance tCalculate with the formula v=s t.

A torpedo on the surface of the water, you look at it at a periscope distance of x meters, you see ** first and then sound, x interval time = speed.

Interval time = speed, first see ** and then sound, x a torpedo on the surface, you periscope look at it from x meters.

The speed at which sound travels in different water is not the sameDistilled waterCelsius) is 1,497 meters per second, 1,531 meters per second in seawater (25 degrees Celsius) and 3,230 meters per second in ice. The speed of sound propagation is fastest in solids, followed by liquids, and the speed of sound in gases.

The slowest. In general, the speed of sound is the speed of sound in the air and is measured in meters per second (1,236 kilometers per hour). The speed of sound varies depending on the state of the air (e.g. humidity, temperature, density).

For example, the speed of sound at sea level at zero degrees Celsius is about 1,193 kilometers per second; The speed of sound at an altitude of 10,000 meters is about 295 meters per second (1,062 kilometers per hour); In addition, for every 1 degree Celsius increase, the speed of sound increases by meters per second.

How it works. Because sound travels at different speeds in different media, the phenomenon of sound reflection and refraction occurs. The phenomenon of sound waves encountering obstacles while traveling and returning to the original medium is called reflection, and this phenomenon of sound wave reflection is also called echo.

If sound is transmitted in different media, the phenomenon of deflection in the direction of propagation due to different velocities is called refraction. For example: "Midnight bell to the passenger ship."

At night, due to the high temperature near the high altitude and the fast speed of sound, the sound waves will deflect downwards as they travel, so it is located in Hanshan Temple.

The bell will be heard on the passenger ship on the river.

1.The speed of sound propagation in different water is different, the propagation speed is 1497 meters per second in distilled water (25 degrees Celsius), 1531 meters per second in seawater (25 degrees Celsius), and 3230 meters per second in registered ice.

The speed at which sound travels through water is 1500m s.

Scientists have also measured the speed of sound in various liquids. At 20, the speed of sound in pure water is meters and seconds; The speed of sound in mercury is 1451 m/s; The speed of sound in glycerol is 1923 m s; The speed of sound in alcohol is 1168 ms and in carbon tetrachloride liquid is 935 ms. The speed at which sound travels through water is 1500m s.

Sound:

Acoustic sound is a kind of pressure wave: when playing a musical instrument, slapping on a door or knocking on a tabletop, their vibration will cause the medium-air molecules to vibrate rhythmically, causing the surrounding air to produce dense changes, forming dense longitudinal waves, which produce sound waves, and this phenomenon will continue until the vibration disappears.

Sound in general always contains a certain range of frequencies. The frequency range of sounds that can be heard by the human ear is between 20 and 20,000 hertz. Fluctuations above this range are called ultrasound, while those below this range are called infrasound.

Animals such as dogs and bats can hear sounds up to 160,000 hertz. Whales and elephants produce sounds with frequencies in the range of 15 to 35 Hz.

Expand your knowledge:

The propagation of sound requires matter, and such a substance is called a medium in physics, which can be a cavity, water, or solid, of course, in a vacuum, sound cannot be propagated, and the propagation of sound is related to temperature and resistance. The speed of sound is not the same in different waters. Distilled water (25) 1497 ms.

Seawater (25) 1531m s. Ice 3230m s.

The propagation velocity of sound in different media is not the same: at air 15, the propagation velocity is 340 m s; At air 25, the propagation velocity is 346m s; In water at room temperature, the propagation velocity is 1500m s; At seawater 25, the propagation velocity is 1530m s; In steel, the propagation velocity is 5200m s; In ice, the propagation velocity is 3160m s.

To estimate the speed at which sound travels through the air, you need to know:

Temperature: Generally at 15 degrees Celsius, the speed of sound is 340 m s, and the speed increases by meters for every 1 degree Celsius increase. So, temperature affects the speed of sound.

Formula: Find Distance: Time * Speed (pay attention to temperature).

Find the velocity (temperature): distance time.

Affects the speed of sound propagation.

factors. 1. The propagation speed of sound is related to the counter-equilibrium force of the medium, which means that when a molecule of a substance deviates from its equilibrium position, the surrounding molecules will squeeze it back to the equilibrium position, and the greater the counter-equilibrium force, the faster the sound will propagate. Water has a greater counterbalance than air, and iron has a greater counterbalance than water.

2. The propagation speed of sound in the air is also related to the pressure.

3. The speed of sound in the air changes with the change of temperature, and the speed of sound rises and decreases by 3m s for every 5 rises and decreases in temperature.

4. The propagation speed of sound increases with the increase of the toughness of the substance, and the density of the substance decreases and decreases. In general, at the same temperature, the sound transmission of solids is the fastest, followed by liquids, and gases are the slowest; In the same medium, the lower the temperature, the slower the speed of sound.

5. The propagation of sound is related to resistance. Sound will be refracted by external materials, for example, when a person shouts in front of a mountain, he can hear his own echo.