Physics Thermodynamics

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

**Two moles of helium gas are taken over the cycle ABCDA as shown below in P-T diagram. Assuming the gas to be ideal, the work done on the gas in taking from A to B is**

27 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

From A to B the process is isobaric

= W = 2 × R (600 - 350)

= 500 R

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

An ideal engine whose efficiency is 40%, receives heat at 500 K. If required efficiency is 50%, then intake temperature for the same exhaust temperature is

4 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

Choose the correct statement.

4 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

Heat is path dependent so path function but internal energy does not depend on path chosen.

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New answer posted•a year ago

Physics Thermodynamics Class 11th

In a thermodynamic process, pressure of fixed mass of a gas is changed in such a manner that the gas releases 20 J of heat and 8 J of work is done on the gas. If initial internal energy of the gas was 40 J, what will be final internal energy?

2 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

Two waves of wavelength 50 cm and 51 cm produced 12 beats per second. The velocity of sound is

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Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

A gas undergoes a cyclic process ABCA as shown. Find the work done by the gas for

17 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

Work Area

->W = $\frac{1}{2}$ * 600 * 4

= 1200J

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

8 moles of oxygen and 4 moles of nitrogen are at same temperature T and are mixed. The total internal energy is

4 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

U = nC_vT

-> $U = n_{1} C_{v_{1}} T + n_{2} C_{v_{2}} T$

-> $8 * \frac{5 R}{2} * T + 4 * \frac{5 R}{2} * T$

= 30RT

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

Find the speed of sound in oxygen gas at STP.

4 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

Kindly go though the solution

$v = \sqrt[]{\frac{γ R T}{M}} = 330 m / s$

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New answer posted•a year ago

Physics Thermodynamics Class 11th

2 moles of monoatomic gas and 6 moles of diatomic gas are mixed. Molar specific heat, for constant volume, of mixture shall be (R is universal gas constant)

2 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

${(C_{v})}_{m i x} = (\frac{2 * \frac{3}{2} + 6 * \frac{5}{2}}{2 + 6}) R$

$= \frac{(3 + 15) R}{8} = \frac{9}{4} R$

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New answer posted•a year ago

Physics Thermodynamics Thermodynamics

The P-V diagram of 4 g of helium gas for a certain process A → B is shown in the figure. What is the heat given to the gas during the process A → B?

24 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

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