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slava [35]
4 years ago
15

Assume that the pressure in a room remains constant at 1.01

Physics
1 answer:
Ray Of Light [21]4 years ago
7 0

Answer:

Explanation:

Given

Pressure P_1=1.01\times 10^5 Pa

Volume of air V=60 m^3

Initial Temperature T_1=289 K

T_2=302 K

Initial moles is given by

PV=nRT

n_1=\frac{P_1V_1}{RT_1}

n_1=\frac{1.01\times 10^5\times 60}{R\cdot 289}

when some gas escape out

no of moles is equal to

n_2=\frac{P_2\times V_2}{R\cdot T_2}

n_2=\frac{1.01\times 10^5\times 60}{R\cdot 302}

remaining no of moles =n_1-n_2

=\frac{1.01\times 10^5\times 60}{R\cdot 289}-\frac{1.01\times 10^5\times 60}{R\cdot 302}

=\frac{1.01\times 10^5\times 60}{R}(\frac{1}{289}-\frac{1}{302})

Mass of air escape out

=(n_1-n_2)\times M

=(\frac{1.01\times 10^5\times 60}{R}(\frac{1}{289}-\frac{1}{302}))\times 28

=25.272\times 10^3\ g

m=25.272\ kg

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snow_tiger [21]

Answer:

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Explanation:

Coulomb's law, or Coulomb's inverse-square law, is an experimental law[1] of physics that quantifies the amount of force between two stationary, electrically charged particles. The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force.[2] The law was first discovered in 1785 by French physicist Charles-Augustin de Coulomb, hence the name. Coulomb's law was essential to the development of the theory of electromagnetism, maybe even its starting point,[1] as it made it possible to discuss the quantity of electric charge in a meaningful way.[3]

The law states that the magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them,[4]

{\displaystyle F=k_{\text{e}}{\frac {q_{1}q_{2}}{r^{2}}}}{\displaystyle F=k_{\text{e}}{\frac {q_{1}q_{2}}{r^{2}}}}

Here, ke is Coulomb's constant (ke ≈ 8.988×109 N⋅m2⋅C−2),[1] q1 and q2 are the signed magnitudes of the charges, and the scalar r is the distance between the charges.

The force is along the straight line joining the two charges. If the charges have the same sign, the electrostatic force between them is repulsive; if they have different signs, the force between them is attractive.

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