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How well do you know the velocity of sound in air?

12 Questions

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How well do you know the velocity of sound in air?

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Questions and Answers

What is the equation for the speed of sound at zero degrees centigrade?

V=331 m/s (correct)

V=273 x (square root of T/331)

V=273 m/s

V=331 x (square root of T/273)

What happens to the velocity of sound in air when temperature increases?

It remains the same

It becomes zero

It decreases

It increases (correct)

What is the speed of sound in air at room temperature?

343 m/s (correct)

273 m/s

331 m/s

299 m/s

How long does it take for the sound of lightning striking a mile away to reach us?

5 seconds Signup and view all the answers

What is the speed barrier for breaking sound at room temperature?

700 miles per hour Signup and view all the answers

Are most planes designed to break the sound barrier?

No Signup and view all the answers

What is the equation for calculating the speed of sound at a different temperature?

V=331 x (square root of T/273) Signup and view all the answers

What happens to the speed of sound at temperatures as low as minus 50 degrees centigrade?

It decreases Signup and view all the answers

Why is the speed of sound important to consider in aviation?

It affects the ability to control the plane Signup and view all the answers

What is the effect of pressure on the speed of sound in air?

It increases the speed of sound Signup and view all the answers

What is the temperature in Kelvin at room temperature?

293 Kelvin Signup and view all the answers

What is the equation for the speed of sound in air?

V=331 x (square root of T/273) Signup and view all the answers

Study Notes

Velocity of Sound in Air and its Temperature Dependence

The velocity of sound in air changes with temperature.
When the temperature goes up, molecules move faster and the pressure goes up.
The messaging of the wave goes much quicker when pressure goes up, and the response time of the wave to the air goes quicker.
The equation for the speed of sound at zero degrees centigrade (273 Kelvin) is V=331 m/s.
To calculate the speed of sound at a different temperature, we need to convert it to Kelvin and use the equation V=331 x (square root of T/273).
At room temperature (20 degrees centigrade or 293 Kelvin), the speed of sound in air is 343 m/s.
If lightning strikes about a mile away, it will take about five seconds for the sound to reach us.
The speed barrier for breaking sound is around 700 miles per hour at room temperature.
Most planes are not made to break the sound barrier.
At temperatures as low as minus 50 degrees centigrade, the speed of sound is 299 m/s, and most passenger planes need to stay well below this speed.
The speed of sound is important to consider in aviation and other fields.
The equation for the speed of sound in air is V=331 x (square root of T/273).

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Description

Test your knowledge on the velocity of sound in air and its temperature dependence with this informative quiz. Learn about the factors that affect the speed of sound, the equation to calculate it, and how it impacts aviation and other fields. From the speed barrier to lightning strikes, put your understanding to the test and see how much you know about this important concept.