# How fast does air flow into a vacuum?

## How fast does air flow into a vacuum?

According to your calculations, through a 1 sq ft hole into a vacuum, air would flow through the hole with a velocity of 646 SCFS.

### What is the speed of air?

At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,235 km/h; 1,125 ft/s; 767 mph; 667 kn), or a kilometre in 2.9 s or a mile in 4.7 s….Speed of sound.

Sound measurements
Characteristic Symbols
Sound pressure p, SPL,LPA
Particle velocity v, SVL
Particle displacement δ

#### How do you calculate how fast a molecule is moving?

Taking the mass of the molecules and the temperature into consideration, we find that the average velocity of the molecules in a gas can be described by a term called the “root mean square (rms) velocity.” The rms velocity of a gas is calculated using the following equation: urms =?3RT?

How fast do molecules move in a gas?

As a side note, gas molecules tend to move very fast. At 0 °C the average H2 molecule is moving at about 2000 m/s, which is more than a mile per second and the average O2 molecule is moving at approximately 500 m/s.

Why does air fill vacuum?

Each molecule is still buzzing around, bouncing off of other molecules and off of the sides of the jar. The volume of the gas has increased and its density has decreased. We’re looking at empty space because the air molecules have all, with no boundaries to stop them, expanded off of the screen.

## Does air rush into vacuum?

If you put a hole in the bottle, air rushes in. The reason the vacuum of space does not attract the molecules is because there is no suction to the vacuum of space — there is no air pressure forcing things into the vacuum.

### How fast is the speed of dark?

light
Darkness travels at the speed of light. More accurately, darkness does not exist by itself as a unique physical entity, but is simply the absence of light.

#### Does air have speed?

For typical air at room conditions, the average molecule is moving at about 500 m/s (close to 1000 miles per hour). Note that the speed of sound is largely determined by how fast the molecules move between collisions, and not on how often they make collisions. This is because no energy is lost during the collisions.

Do heavier molecules move faster?

Since all gases have the same average kinetic energy at the same temperature, lighter molecules move faster and heavier molecules move slower on average.

How fast do water molecules move?

approximately 590 m/s
The faster a molecule moves, the more kinetic energy it has, and the higher the measured temperature. When water is at room temperature (20 °C or 68 °F), the average speed of the water molecules in the water is approximately 590 m/s (≈1300 mph).

## At what temperature will a gas move the fastest?

### What is the strongest vacuum on Earth?

The largest vacuum system in the world The insulating vacuum, equivalent to some 10-6 mbar, is made up of an impressive 50 km of piping, with a combined volume of 15,000 cubic metres, more than enough to fill the nave of a cathedral.