3 years ago

What is the Nitrogen Family

Physics

1 answer:

Lorico [155]3 years ago

6 0

Nitrogen forms many chemical compounds, such as amino acids, ammonia, nitric acid and cyanide.

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Answer

Pressure, P = 1 atm

air density, ρ = 1.3 kg/m³

a) height of the atmosphere when the density is constant

Pressure at sea level = 1 atm = 101300 Pa

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P = ρ g h

$h = \dfrac{P}{\rho\ g}$

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h = 7951.33 m

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b) when air density decreased linearly to zero.

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assuming density is zero at x - distance

$\rho_x = \dfrac{\rho_{sl}}{h}\times x$

now, Pressure at depth x

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$dP = \dfrac{\rho_{sl}}{h}\times x g dx$

integrating both side

$P = g\dfrac{\rho_{sl}}{h}\times \int_0^h x dx$

$P =\dfrac{\rho_{sl}\times g h}{2}$

now,

$h=\dfrac{2P}{\rho_{sl}\times g}$

$h=\dfrac{2\times 101300}{1.3\times 9.8}$

h = 15902.67 m

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How does the momentum of a 75 kilogram stationary football player compare with that of a 70 kilogram player moving at a velocity

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-- The moving player has momentum.

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