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Q: Which is more dense – air that is 90 degrees or air that is 40 degrees?

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Colder air is denser than warmer air

100 is more.

(-40) degrees Fahrenheit = (-40) degrees Celsius.

Argon is denser than air at same pressure and temperature ( about 40 : 28.8)

At the equator the moist air rises and rain falls over the tropics. The air then moves north and south of the equator and sinks between 20 degrees and 40 degrees north and south. Since the air is now dry and sinking, little rain falls and the areas around these latitudes are deserts and semiarid lands.

355 m/s

All of Iowa is more than 40 degrees north latitude.

No, gold is 19.3 times as dense as water, wood is roughly 0.5 times as dense as water. Therefore gold is almost 40 times denser than wood.

The speed of sound varies with the density of whatever it travels through. Something less dense than air means a faster relative speed of sound, something more dense means a slower relative speed of sound. The slower sound moves, the lower we perceive it's pitch, the faster the speed, the higher the perceived pitch. Vocal chords stretch and tighten to make sounds of different pitches. If you replace the air (Nitrogen-Oxygen mix) with something LESS dense like Helium (1/6th the density of air) then the sounds made by the vocal chords working exactly the same as they did in air, will have a higher apparent pitch because the sonds they make move faster through helium than they do through air. Please note, the vocal chords are NOT moving any faster than they do in air. So with something more dense than air (like xenon about 4 times more dense, or even better Sulfur Hexafluoride about 16 times more dense than air and 40% more dense than water!) the sound will have an apparently lower pitch, because the sound made by the vocal chords will move more slowly through the denser gas and so have a LOWER perceived pitch.

where is 40 degrees north latitude and 40 degrees west longitude

180 degrees - 100 degrees - 40 degrees = 40 degrees

-40 degrees Celsius is -40 degrees Fahrenheit.

-40 degrees Fahrenheit is equal to -40 degrees Celsius.

40 degrees Celsius is hotter and is equal to 104 degrees Fahrenheit, while 40 degrees Fahrenheit is someone cold compared to 40 degrees Celsius and is equal to 4.44 degrees Celsius. So to answer the question 40 degrees Fahrenheit is colder.

40 degrees fahrenheit 40 degrees celsius is way higher then it is fahrenheit.

It is also -40-40 degrees Celsius equals - 40 degrees Fahrenheit. Easy to remember.

Its the same, -40 degrees Fahrenheit = -40 degrees Celsius.

Was that on purpose? Because it just so happens that -40 is where the two meet! -40 degrees Celsius = -40 degrees Fahrenheit. Was that on purpose? Because it just so happens that -40 is where the two meet! -40 degrees Celsius = -40 degrees Fahrenheit.

- 40 degrees

-40 degrees Celsius is equal to -40 degrees Fahrenheit.

Believe it or not ... -40°F.The two scales have equal numerical values at this temperature.Its the same, -40 degrees Celsius = -40 degrees Fahrenheit.Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is also -40 degrees Fahrenheit.(-40) degrees Celsius = (-40) degrees Fahrenheit-40 degrees Celsius = -40 degrees FahrenheitAnswer: -40 ºC = -40 ºF-40

(-40) degrees Fahrenheit = -40 degrees Celsius.

Neither. It is 40 degrees Celsius

Minus 40 degrees Fahrenheit is minus 40 degrees Celsius.

(-40) degrees Fahrenheit = -40 degrees Celsius.