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Determine the net heat radiated by the black body disc of mass 6g and radius 4cm at 400C,initially kept at 300C.
Determine the net heat transfer through the black body disc with radius1cm and mass 6g, at 00C when transferred to a surrounding temperature of 100C.
Find the steady state temperature of the black body disc having radius 3cm and mass 5g at 10 0C surrounding temperature,when kept initially at -10 0C.
Determine the net heat transfer through the black body disc with radius 4cm and mass 9g, at 320C when transferred to a surrounding temperature of 650C.

find steady state temperature of black body disc having 2cm and mass 7g at 45 degree C SURROUNDING temperature, when kept initially at 28 degree C .hence determine Stefan's constant


Find the ratio of strain energies stored in bars A and B of the same axial tensile loads. The bar A is of 50mm diameter through out its length, while bar B though of same length as of A but has diameter of 25 mm for the middle one - third of its length and the remainder is of 50 mm . Assume gradual load
Heat is allowed to flow out of an ideal gas at constant volume so that it's pressure drops from 2.2atm to 1.4atm. Then the gas is expanded at constant pressure from a volume 6.8L to 9.3L until the temperature reaches it's final value.what is the total work done by the gas in the process,the internal energy of the gas and the total flow of heat into or out of the gas.
The steam is heated to raise its temperature to 150°C. Show the process on a sketch of the p–v diagram, and evaluate the pressure, increase in enthalpy, increase in internal energy, increase in entropy of steam, and the heat transfer. Evaluate also the pressure at which the steam becomes dry saturated.

In an automobile engine, the gas (a mixture of air and petrol) in the cylinders is compressed to 1\9 of its original volume. The initial pressure is 1.0 atm and the initial temperature is 27 °C.

If the pressure after compression is 21 atm, the temperature of the compressed gas is (Assume that the gas behaves as ideal.)


What is plasma physics ? How is it use on a space shuttle ? How significant is it on planets such as Jupiter or venus ? What is it functions when going into orbital space ?
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