FAQ

# a helium-filled balloon will reach its maximum altitude when __________.

## What happens to the air pressure inside a balloon when it is squeezed to half its volume at constant temperature?

At a constant temperature, the air pressure will double inside a balloon when it is squeezed to half its volume.

## How does the pressure at the bottom of a 76?

How does the pressure at the bottom of a 76-cm column of mercury in a barometer compare with the air pressure at the bottom of the atmosphere? … Atmospheric pressure equals the pressure under 10.3 m of water and so can push water no higher.

## What change in pressure occurs in a party balloon that is squeeze to 1/3 its volume with no change in temperature?

A balloon when squeezed to one third of its volume, and with no change in temperature the pressure increases up to three times its original pressure. According to Boyle’s law, volume is inversely proportional to pressure.

## When a party balloon is compressed to one third its volume gas pressure in the balloon <UNK>?

What change in pressure occurs in a party balloon that is squeezed to one-third its volume with no change in temperature? The pressure will increase to three times its original pressure.

## What causes pressure inside a helium balloon?

Explanation: So the gas pressure of a helium balloon arises from the impact of the collisions of the helium atoms between themselves and with the inside surface of the balloon. Of course, the outside atmosphere similarly exerts a pressure on the outside of the balloon.

## Why are high altitude weather balloons only slightly filled with helium before they are released from Earth?

As the balloon rises, the gas inside the balloon expands because the atmospheric pressure surrounding the balloon drops. The atmosphere is 100 to 200 times less dense at the float altitudes than on the ground.

## What is the pressure at the bottom of the barometer?

atmospheric pressure
The pressure at the bottom of the barometer, Point B, is equal to the atmospheric pressure. The pressure at the very top, Point C, can be taken as zero because there is only mercury vapour above this point and its pressure is very low relative to the atmospheric pressure.

## What is the pressure at the bottom of the column of air referred to in the preceding question?

What is the pressure at the bottom of the column of air referred to in the previous question? … atmospheric pressure equals the pressure under 10.3 m of water and so it can’t push water higher.

## What change in pressure occurs in a party balloon that is squeezed to one third its volume with no change in temperature quizlet?

What change in pressure occurs in a party balloon that is squeezed to one-third its volume, with no change in temperature? Pressure increases by a factor of three.

## How does the density of air in a deep mine compare with the density of air at earths surface?

Density of air at the surface is less than the density of air in a deep min. The weight and pressure at the bottom of the mine is increases by adding the air filling up the mine. The greater pressure in a gas means greater density based on Boyle’s law.

## What occurs when a gas is compressed quizlet?

What happens to the particles in a gas when the gas is compressed? The space between particles is reduced. Explain why heating a contained gas that is held at a constant volume increases its pressure. The increased kinetic energy of the particles causes collisions to occur more frequently and with more force.

## When a gas in a container expands to twice its volume its density?

Homework 6
When gas in a container expands to twice its volume, its density Is half
Strictly speaking, gas pressure inside an inflated stretched balloon is Slightly greater than the pressure outside the baloon

## When the volume of air is compressed what is the temperature?

Pressure multiplied by volume divided by temperature equals a constant. The combination law explains what happens to air when it’s compressed into a smaller volume. It tells us that when air is compressed, the pressure and temperature of the air increases, as the volume of the space containing air decreases.

## Why does a balloon decrease in size at a higher altitude?

It is filled with very cold high density air at that point. As the balloon warms the balloon expands and the density of the air inside the balloon decreases. … This force is caused by the air outside the parcel (air surrounding the parcel). Pressure decreases with increasing altitude.

## What causes a balloon to inflate?

Warm air is less dense than cold. Since warm air takes up more space than the same amount of cold air it makes the balloon inflate.

## Why does the volume of a balloon increases?

What do you think happens to the volume of gas inside the balloon? As the temperature increases, the gas particles absorb more heat energy. They speed up and move farther away from one another. So the increase in temperature causes an increase in volume.

## What is the altitude of a weather balloons?

Weather balloons can rise to an altitude of 24 miles (39 kilometers) or more before they burst, and a payload may land (via parachute) up to 75 miles (120 km) away, depending on wind conditions at the launch site, Maydell said.

## Why do helium balloons pop at high altitudes?

As the balloon ascends, the pressure of its environment decreases, and the balloon begins to expand. This expansion continues until the material of the balloon is stretched to its breaking point, causing the balloon to burst. This typically occurs at stratospheric altitudes between 30 and 35 km.

## Does helium expand at altitude?

Because density is altered by altitude, the helium balloon can reach a height of 9,000 meters, or 29,537 feet. Anything higher than this altitude will cause the helium within the balloon to expand and the balloon to pop.

## Would straws work in space?

It can’t, because there is no such force as “suction,” only atmospheric pressure rushing in to fill the void. On the moon (outside a pressurized habitat) there is no air pressure, so straws don’t work.

## Why does water not fall out of straw?

This is because the atmosphere exerted a pressure upwards from the bottom to prevent the water from falling (the headspace above the water has some small downwards pressure that is minimized by the incompressibility of water). The net force is zero, so the water doesn’t move.

## How do you find pressure at altitude?

To calculate pressure altitude without the use of an altimeter, subject approximately 1 inch of mercury for every 1,000-foot increase in altitude from sea level. For example, if the current local altimeter setting at a 4,000-foot elevation is 30.42, the pressure altitude would be 3,500 feet: 30.42 – 29.92 = 0.50 in.

## Why mercury is used in barometer?

Mercury is employed in the barometer because its density is sufficiently high for a relative short column to be obtained. and also because it has very small vapour pressure at normal temperature. High density scales down the pressure head(h) to repesent same magnitude of pressure in a tube of smaller height.

## What is the meaning Torr?

The torr (symbol: Torr) is a unit of pressure based on an absolute scale, defined as exactly 1760 of a standard atmosphere (101325 Pa). Thus one torr is exactly 101325760 pascals (≈ 133.32 Pa). … It is often combined with the metric prefix milli to name one millitorr (mTorr) or 0.001 Torr.

## How much does pressure decrease with altitude?

Since more than half of the atmosphere’s molecules are located below an altitude of 5.5 km, atmospheric pressure decreases roughly 50% (to around 500 mb) within the lowest 5.5 km. Above 5.5 km, the pressure continues to decrease but at an increasingly slower rate.

## How much does pressure drop with altitude?

This can also be interpreted another way: For altitudes of less than about 3,000 feet (914.4 meters), the barometric air pressure decreases about 0.01 inches of mercury for each 10 feet (3 meters) of altitude (or a decrease of 1 inch of mercury for each 1,000 foot [304.8 meters] gain in altitude).

## When the pressure is half of that at sea level what is the altitude?

When you reach an altitude of about 5,500 meters (about 18,000 feet), the air pressure is only about one half of what it was at sea level, which means that about half of the Earth’s atmosphere is already below you.

## What happens to the internal pressure in a fluid flowing in a?

What happens to the internal pressure in a fluid flowing in a horizontal pipe when its speed increases? The pressure decreases when the speed increases. … The speed increases as the air flows over the wing, so the pressure decreases.

## What causes atmospheric pressure quizlet?

Atmospheric pressure is caused by the weight of air, just as water pressure is caused by the weight of water.

## Is pressure greater or less in regions where streamlines are crowded?

Is pressure greater or less in regions where streamlines are crowded? Pressure is lower where streamlines are closer.

## Would this maximum depth be greater than less than or the same as if he pumps water in San Francisco?

Would this maximum depth be greater than, less than, or the same as if he pumps water in San Francisco? … Since atmospheric pressure is greater in sea-level San Francisco than in higher-altitude Pocatello, maximum well depth for Richard’s pump is greater in San Francisco.

## When you squeeze a balloon to make it smaller its density?

When you squeeze an air-field balloon, you essentially compress the same amount of air into a smaller volume. Density ρ is inversely…

## How To Calculate The Buoyant Force & Load Mass of a Helium Balloon – Physics

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