A simple barometer will be tallest if it uses water.

Here's why:

A barometer measures atmospheric pressure. The height of the liquid column in a barometer is inversely proportional to the density of the liquid used. This means that the less dense the liquid, the higher the column will be for a given atmospheric pressure.

Mercury is much denser than water or gasoline, so a mercury barometer has a much shorter column. Gasoline is less dense than water, but still more dense than air, so a gasoline barometer would have a taller column than a mercury barometer, but shorter than a water barometer.

Therefore, a barometer using water, which is less dense than either mercury or gasoline, would have the tallest column at sea level under standard atmospheric conditions.

Question

A simple barometer will be tallest if it uses water.

Here's why:

A barometer measures atmospheric pressure. The height of the liquid column in a barometer is inversely proportional to the density of the liquid used. This means that the less dense the liquid, the higher the column will be for a given atmospheric pressure.

Mercury is much denser than water or gasoline, so a mercury barometer has a much shorter column. Gasoline is less dense than water, but still more dense than air, so a gasoline barometer would have a taller column than a mercury barometer, but shorter than a water barometer.

Therefore, a barometer using water, which is less dense than either mercury or gasoline, would have the tallest column at sea level under standard atmospheric conditions.

Knowee AI · Accepted Answer

A simple barometer will be tallest if it uses water.

Here's why:

A barometer measures atmospheric pressure. The height of the liquid column in a barometer is inversely proportional to the density of the liquid used. This means that the less dense the liquid, the higher the column will be for a given atmospheric pressure.

Mercury is much denser than water or gasoline, so a mercury barometer has a much shorter column. Gasoline is less dense than water, but still more dense than air, so a gasoline barometer would have a taller column than a mercury barometer, but shorter than a water barometer.

Therefore, a barometer using water, which is less dense than either mercury or gasoline, would have the tallest column at sea level under standard atmospheric conditions.

A simple barometer will be tallest if it uses mercury. water. gasoline (which is less dense than water). any of these liquids, for the height would be the same at sea level.

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