Physics, 10.10.2019 11:30 Mercedes12152002

The atmospheric pressure at the surface of venus is 91 times the pressure at sea level on earth. with approximately how much total force would venus's atmosphere push on an average human being at sea level?

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Pressure is the force exerted by a gas, a liquid or a solid on a surface (or area) , its unit is Pascal which is equal to $N/m^{2}$ and its formula is:

$P=\frac{F}{A}$ (1)

Now, we know the atmospheric pressure on Earth $P_{E}$ at sea level is:

$P_{E}=101325 Pa$ (2)

And we are told the atmospheric pressure at the surface of Venus $P_{V}$ is 91 times the pressure at sea level on earth:

$P_{V}=91P_{E}$ (3)

This means:

$P_{V}=(91)(101325 Pa)$ (4)

By solving equation (4) we will find the the atmospheric pressure at the surface of Venus:

$P_{V}=922285 Pa$ (5)

In order to find the force Venus's atmosphere would push on an average human being at sea level, we have to substitute the value of $P_{V}$ in equation (1) and find , assuming that the surface area of an average human being is $1.8m^{2}$ :

$P_{V}=\frac{F}{A}$

$F=(P_{V})(A)$ (6)

$F=(922285 Pa)(1.8m^{2})$

Finally:

F=1660113N

Answer from: Quest

the answer is to check all of them! they all apply well at least i think so!

Answer from: Quest

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

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