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Liono4ka [1.6K]
4 years ago
11

Can You Please Help Me Gravity & Inertia Why don’t we see the ground coming toward us?

Physics
1 answer:
FromTheMoon [43]4 years ago
8 0
Gravity is pulling everything down . Without it, we all would be floating.
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A mass of gas has a volume of 4m3, a temperature of 290k, and an absolute pressure of 475 kpa. When the gas is allowed to expand
motikmotik

Given:

V1 = 4m3

T1 = 290k

P1 = 475 kpa = 475000 Pa

V2 = 6.5m3

T2 = 277K

Required:

P

Solution:

n = PV/RT

n = (475000 Pa)(4m3) / (8.314 Pa-m3/mol-K)(290k)

n = 788 moles

P = nRT/V

P  = (788 moles)(8.314 Pa-m3/mol-K)(277K)/(6.5m3)

P = 279,204 Pa or 279 kPa

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3 years ago
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In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is appro
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Explanation:

It is given that,

Radius of the circular orbit, r=0.53\times 10^{-10}\ m  

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F=\dfrac{mv^2}{r}

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F=8.31\times 10^{-8}\ N

(b) The centripetal acceleration of the electron is given by :

a=\dfrac{v^2}{r}

a=\dfrac{(2.2\times 10^6)^2}{0.53\times 10^{-10}}

a=9.13\times 10^{22}\ m/s^2

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5 0
3 years ago
I need help with number 2 and 3
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1. Gas
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4 years ago
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Hi,

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4 years ago
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