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Define the Tea in Thermos?
One liter of tea at 90° C is poured keen on a vacuum-insulated container (thermos). The surface area of the thermos walls A=600 cm2. The volume among the walls is pumped down to Po~ 5.10-6 atm pressure (at room temperature). The emissivity of the thermal and the walls capacity of water C = 4.2.103 J/kg K. ignore the heat leakage through the stopper, estimate the
a) Net power transfer
b) Time for the tea to cool from 90°C to 70°C.
A box is divided into two parts of equal volume via a partition. The box is thermally insulated from the surroundings. Consider that compartment 1 contains an ideal gas A at P 0 ,
Illustrate how plane polarized light obtained by refraction. Illustrate double refraction ( birefringence) of light. define Young's double slit experiment and give the required the
Why do dead bodies float in water ?
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Q. What is the dissimilarity between the Atomic Theory and the Kinetic Theory? Answer:- Atomic theory is about structure of an atom that is its composition. Similar to an
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explain newtons motion law
A step-up transformer works on 220V and gives 2A to an external resistor. The turn ratio between the secondary and primary coils is 2 : 25. Assuming 100% efficiency, Determine the
what is nicol prism?
One of the practical aspects of the Engineering Profession includes the design of industrial equipment. Design could be described as a creative, iterative and sometimes open-ended
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