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andrey2020 [161]
3 years ago
10

Consider an insulated tank with a volume V = 2 L is separated into two equal-volume parts by a thin wall. On the left is an idea

l gas at P = 100kPa and T = 500K; on the right is a vacuum. Now the wall is removed. a) What is the final temperature in the tank? b) What is the ∆Suniv due to the removal of the wall?
Physics
1 answer:
steposvetlana [31]3 years ago
5 0

Answer

given,

V = 2 L

the left is an ideal gas at  P = 100 k Pa and T = 500 K

mass is constant

 m_1 = m_2

\dfrac{P_1V_1}{RT_1} = \dfrac{P_2V_2}{RT_2}

Pressure is same because it's not changing due to process

\dfrac{V}{500} = \dfrac{2 V}{T_2}

T_2 = 1000\ K

\Delta S_{univ} = \Delta S_{sys} + (\Delta S)_{surr}

\Delta S_{univ} =m(C_v ln (\dfrac{T_2}{T_1}))+ R ln (\dfrac{V_2}{V_1})

m = \dfrac{P_1V_1}{RT_1}

m = \dfrac{100 \times 10^3 \times 2 \times 10^{-3}}{287\times 500}

m = 1.39 x 10⁻³ Kg

\Delta S_{univ} =1.39\times 10^{-3}(0.718 ln\ 2+ 0.287 ln (2)

\Delta S_{univ} =0.968\times 10^{-3}\ kJ/K

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Answer:

A. It is always a positive force

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i.e F = - kx

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Furkat [3]

Explanation:

It doesn't depends upon other.

It have it's own identity.

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Annette [7]

Answer: (a) Z-score are 1 and -1.2 for northern and southern regions, respectively.

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The z-score is calculated by the following:

z=\frac{x-\mu}{\sigma}

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The z-score for birds living in the northern region is 1, which means it is 1 standard deviation <em>above the mean</em>.

For the southern region:

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The z-score for southern living birds is -1.2, meaning it is 1.2 standard deviations <em>below the mean</em>.

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In the Biomedical and Physical Sciences building at MSU there are 135 steps from the ground floor to the sixth floor. Each step
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Answer:

W = 16.5 Kj

P = 49.9 Watt

E = 16471

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