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A vertical hollow cylinder of height 152 cm is fitted with a weightless piston. The lower half is filled with an ideal gas and the upper half with mercury.The cylinder is now heated at300K,so that 1/4th of the mercury comes out.Find the temperature at which it will happen assuming thermal expansion of Hg to be negligible

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A vertical hollow cylinder of height 152 cm is fitted with a weightless piston. The lower half is filled with an ideal gas and the upper half with mercury.The cylinder is now heated at300K,so that 1/4th of the mercury comes out.Find the temperature at which it will happen assuming thermal expansion of Hg to be negligible

Anonymous User tag : Chemistry State of matter 05 Apr, 2020 1 Answer 52 views

A 10 cm air column is trapped inside the tube (having uniform area of cross section) by 6 cm of Hg and is placed horizontally to the plane. Calculate the length of air column when the tube is placed vertically with opened end up.

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A 10 cm air column is trapped inside the tube (having uniform area of cross section) by 6 cm of Hg and is placed horizontally to the plane. Calculate the length of air column when the tube is placed vertically with opened end up.

Anonymous User tag : Chemistry State of matter 05 Apr, 2020 1 Answer 52 views

50 ml of mixture of NH3 and H2 are decomposed to yield N2 and H2 and to the resulting mixture 40 ml O2 is added and the mixture is sparked to yield H2O. When the resulting mixture of gases were passed through alkaline pyrogallol 6 ml contraction was observed. Calculate the percentage composition of NH3 in the original mixture

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50 ml of mixture of NH3 and H2 are decomposed to yield N2 and H2 and to the resulting mixture 40 ml O2 is added and the mixture is sparked to yield H2O. When the resulting mixture of gases were passed through alkaline pyrogallol 6 ml contraction was observed. Calculate the percentage composition of NH3 in the original mixture

Anonymous User tag : Chemistry State of matter 05 Apr, 2020 1 Answer 52 views

2 g of a gas A is introduced into an evacuated flask kept at 25°C. The pressure is found to be 1 atm. If 3 g of another gas B is added to the same flask the total pressure becomes 1.5 atm, assuming ideal gas behaviour. The ratio of molecular weight of gas A to gas B (MA : MB) is

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2 g of a gas A is introduced into an evacuated flask kept at 25°C. The pressure is found to be 1 atm. If 3 g of another gas B is added to the same flask the total pressure becomes 1.5 atm, assuming ideal gas behaviour. The ratio of molecular weight of gas A to gas B (MA : MB) is

Anonymous User tag : Chemistry State of matter 05 Apr, 2020 1 Answer 52 views

One end of a thermally insulated rod is kept at a temperature T1 and the other at T2. The rod is composed of two sections of lengths l1 and l2 and thermal conductivities K1 and K2 respectively. What would be the temperature at the interface of the two sections?  -0

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One end of a thermally insulated rod is kept at a temperature T1 and the other at T2. The rod is composed of two sections of lengths l1 and l2 and thermal conductivities K1 and K2 respectively. What would be the temperature at the interface of the two sections? 

-0

Anonymous User tag : Physics Heat Transfer 04 Apr, 2020 1 Answer 53 views

Assuming the sun to be a spherical body of radius R at a temperature of TK, evaluate the total radiant power, incident on earth, at a distance r from the sun. Note: r0 is the radius of the earth and is Stefan's constant.

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Assuming the sun to be a spherical body of radius R at a temperature of TK, evaluate the total radiant power, incident on earth, at a distance r from the sun.

Note: r0 is the radius of the earth and is Stefan's constant.

Anonymous User tag : Physics Heat Transfer 04 Apr, 2020 1 Answer 52 views

The figure shows a system of two concentric spheres of radii r1 and r2 and kept at temperatures T1 and T2, respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to

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The figure shows a system of two concentric spheres of radii r1 and r2 and kept at temperatures T1 and T2, respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to

Anonymous User tag : Physics Heat Transfer 04 Apr, 2020 1 Answer 52 views

The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2K and thickness x and 4x, respectively are T2  and T1  (T2  > T1). The rate of heat transfer through the slab, in a steady state is , with equal to

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The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2K and thickness x and 4x, respectively are T and T1  (T > T1). The rate of heat transfer through the slab, in a steady state is , with equal to

Anonymous User tag : Physics Heat Transfer 04 Apr, 2020 1 Answer 52 views

One end of a thermally insulated rod is kept at a temperature T1 and the other at T2. The rod is composed of two sections of lengths l1 and l2 and thermal conductivities K1 and K2 respectively. What would be the temperature at the interface of the two sections?  -0

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One end of a thermally insulated rod is kept at a temperature T1 and the other at T2. The rod is composed of two sections of lengths l1 and l2 and thermal conductivities K1 and K2 respectively. What would be the temperature at the interface of the two sections? 

-0

Anonymous User tag : Physics Heat Transfer 04 Apr, 2020 1 Answer 52 views

A Carnot engine, having an efficiency of n = 1/10 as a heat engine, is used as a refrigerator. If the work done on the system is 10 J, what will be the amount of energy absorbed from the reservoir at a lower temperature?

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A Carnot engine, having an efficiency of n = 1/10 as a heat engine, is used as a refrigerator. If the work done on the system is 10 J, what will be the amount of energy absorbed from the reservoir at a lower temperature?

Anonymous User tag : Physics Thermodynamics 04 Apr, 2020 1 Answer 53 views