Physics, 08.10.2019 01:30 nataliem02

Consider two small masses of air, both at a pressure of 1000 mb. one mass is on the beach in costa rica (lucky air mass) and the other is on a glacier in greenland ( which mass has the higher density?

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Answer from: narnia85

the air density in Costa Rica is less than the air density in Greenland

Explanation:

Analyze this case give us information about air that in the first approximation we can consider it an ideal gas, so we can use the equation

PV = nRT

Where P is the pressure is the volume, n the number of moles, T the absolute temperature

They ask us to calculate the density with formula

d = m / V

Of the first equation

n / V = (P / R) 1 / T (1)

The number of moles is directly related to the mass of the gas, therefore the ratio of the left (n / V) is proportional to the density of the gas

Let's analyze there are several constant quantities, the pressure. The area of Costa Rica is close to the Earth's equator, so it has a high temperature (T1). The part of Greenland is near the Arctic circle cooler zone (T2). Therefore the temperature of Costa Ricacha is much higher than that of Greenland (T1 >> T2)

In equation 1 we see that as the density is inversely proportional to the temperature, therefore the air density in Costa Rica is less than the air density in Greenland

Answer from: Quest

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

Answer from: Quest

pretty sure it's false

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Consider two small masses of air, both at a pressure of 1000 mb. one mass is on the beach in costa r...

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