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? 

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Anonymous User Physics Heat Transfer 04 Apr, 2020 1 Answer 61 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.

Anonymous User Physics Heat Transfer 04 Apr, 2020 1 Answer 71 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

Anonymous User Physics Heat Transfer 04 Apr, 2020 1 Answer 64 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 T and T1  (T > T1). The rate of heat transfer through the slab, in a steady state is , with equal to

Anonymous User Physics Heat Transfer 04 Apr, 2020 1 Answer 59 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

Anonymous User Physics Heat Transfer 04 Apr, 2020 1 Answer 59 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?

Anonymous User Physics Thermodynamics 04 Apr, 2020 1 Answer 56 views


Two rigid boxes containing different ideal gases are placed on a table. Box A contains one mole of nitrogen at temperature T0, while Box B contains one mole of helium at temperature (7/3) T0. The boxes are then put into thermal contact with each other and heat flows between them until the gases reach a common final temperature. (Ignore the heat capacity of boxes). Then, what will be the final temperature of the gases, Tf, in terms of T0?

Anonymous User Physics Thermodynamics 04 Apr, 2020 1 Answer 61 views






Two thermally insulated vessels 1 and 2 are filled with air at temperatures (T1, T2 ), volume (V1, V2 ), and pressure (P1, P2 ), respectively. If the valve joining the two vessels is opened, the temperature inside the vessel at equilibrium will be

Anonymous User Physics Thermodynamics 04 Apr, 2020 1 Answer 72 views