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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.
what would be the introduction to a moving ciol galvanometer
Fourth Harmonic-Standing Waves on a String There are a variety of patterns that could be generates through vibrations inside a string, slinky, or rope. Every pattern correspond
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Two resistances have lengths in the ratio 1:4 and radius 1:2,specific resistances in ratio 3:1. compare their resistances. Solution) Given lengths l1=1 l
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Example of state function
A sinusoidal voltage trace displayed by an oscilloscope is shown in Figure. If the 'time/cm' switch is on 500µs/cm and the 'volts/cm' switch is on 5V/cm, find, for the waveform,
It is the energy possessed by a body because of the interactive forces inside the object. This may be defined as the work done in assembling all the particles of a body in a exact
De?ne Pilling-Bed Worth rule. Write about the applications of carbon nanotubes and nanowires.
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