# What is speed of sound in air?

## What is speed of sound in air?

speed of sound, speed at which sound waves propagate through different materials. In particular, for dry air at a temperature of 0 °C (32 °F), the modern value for the speed of sound is 331.29 metres (1,086.9 feet) per second.

## What is the speed of sound in air Class 9?

The speed of sound in air is 343ms−1.

What is sound speed?

If we consider the atmosphere on a standard day at sea level static conditions, the speed of sound is about 761 mph, or 1100 feet/second.

What is the speed of sound in air Class 7?

The speed of sound in air is about 332 meter per second.

### Why is there a speed of sound?

But why is there a speed of sound? Sound is, after all, a propagating vibration of air molecules. Molecules do not move around instantaneously; their speed is affected by the density and elasticity of the material — which in turn affect the speed of vibrations and thus sound.

### What is the speed of sound in air Mcq?

Speed of sound in air: The average speed of sound in air is 343 m/s at 25°C temperature.

What is the speed of sound in air m s?

The speed of sound in air at 20oC is 343.2 m/s which translates to 1,236 km/h.

What is the speed of sound in a gas?

Speed of Sound in Gases

Gas ft/s m/s
Oxygen (27ºC) 1082 ft/s 330 m/s
Oxygen (30ºC) 1090 ft/s 332.2 m/s
Sulfur dioxide (0ºC) 686 ft/s 209 m/s
Sulfur hexafluoride (11ºC) 436 ft/s 133 m/s

## Who Discovered speed of sound in air?

In the 17th century, the French scientist and philosopher Pierre Gassendi made the earliest known attempt at measuring the speed of sound in air.

## What affects the speed of sound in air?

By far, the most important factor influencing the speed of sound in air is temperature. The speed is proportional to the square root of the absolute temperature, giving an increase of about 0.6 m/s per degree Celsius. For this reason, the pitch of a musical wind instrument increases as its temperature increases.

What is the speed of sound in air in km h?

1,225 km/h
On Earth, the speed of sound at sea level — assuming an air temperature of 59 degrees Fahrenheit (15 degrees Celsius) — is 761.2 mph (1,225 km/h).

Which best describe the sound wave Mcq?

The correct answer is Frequency. The frequency and amplitude of a sound wave affect pitch and loudness respectively.

### What is the speed of sound in water?

Sound travels faster in water than in air. The speed of sound in air under typical conditions is about 343 meters per second, while the speed of sound in water is about 1,480 meters per second.

### What is the sound in gas?

Sound consists of a waveform moving through a material. The speed of sound in a gas is primarily a function of the temperature of the gas. Since air is a mixture of gases and includes water vapor, the relative humidity of air has a slight effect on the speed of sound.

What is the speed of sound in liquid?

The speed of sound in water is more than that of the air, and sound travels faster in water than in air. The speed of sound in water is 1480 metres per second. It is also interesting that the speed may vary between 1450 to 1498 meters per second in distilled water.

What is the SI unit of sound?

The SI unit of sound pressure is pascal (Pa). Decibel (dB) is a relative unit of measurement widely used in acoustics. However, the dB is not a unit in the sense that a metre is a unit of length. The decibel is a logarithmic unit used to describe a ratio between the measured level and a reference or threshold level.

## How was the speed of sound in air first measured?

In 1808 Jean-Baptiste Biot, a French physicist, conducted direct measurements of the speed of sound in 1,000 metres of iron pipe by comparing it with the speed of sound in air.

## What does speed of sound depend on?

The speed of sound varies greatly depending upon the medium it is traveling through. The speed of sound in a medium is determined by a combination of the medium’s rigidity (or compressibility in gases) and its density. The more rigid (or less compressible) the medium, the faster the speed of sound.

What is the speed of sound in air at C?

The speed of sound in air is approximately 331.5 m/s at 0 °C or around 1200 km per hour.

How do you calculate the speed of sound in air?

Two blocks of wood,or other items that make a loud,sharp sound when struck together

• A stopwatch
• A friend to help with the experiment
• A tape measure
• ### What factors affect speed of sound in air?

The density of the medium affects the speed of sound. In the case of air, humidity, density, temperature, and moisture can affect air density and in turn affect the speed of sound. On a muggy day, for example, sound travels slower because humidity makes the air more dense.

### How to calculate the speed of sound in air?

The speed of sound in our experiment is 343.8 m/s. Speed of sound waves traveling in a medium will change based on the temperature (T) of the medium. Speed of sound in air as a function of temperature : S = 331.4 + 0.6Tc m/s. where Tc = temperature in degrees centigrade. Based on this formula, the accepted speed of sound at 75 F (23.88 degree

What is the approximate speed of sound in the air?

History.

• Basic concepts.
• Equations.
• Dependence on the properties of the medium.
• Altitude variation and implications for atmospheric acoustics.
• Practical formula for dry air.
• Details.
• Effect of frequency and gas composition.
• Mach number.
• Experimental methods.