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A 2kg piece of copper at 200o C is taken out of a furnace and is allowed to cool in air with an ambient temperature of 25o C. Calculate the entropy change in the universe as a result of this process. The Cp of copper is 0.38 kJ/kg K.
why the light vibrating in the plane ofincidence is not reflected at Brewster''s angle?
Quality: It is the characteristics of a sound by which we can distinguish among two sounds of the similar pitch and the loudness is known as quality of sound.
find the dimensions of the following i.power ii.velocity iii.force
12 to 16 pages project or assignment on electrostatic shielding
Charles' law (J.A.C. Charles; c. 1787) At constant pressure the volume of ideal gas is proportional to the thermodynamic temperature of that gas.
For a blackbody, the frequency at which maximum energy is emitted is 3 x 10 13 Hz: A. Give a wavenumber for the wavelength of the infrared emission? B. What is the tempe
With the help of a ray diagram, explain the formation of the final image of an object in a compound microscope. Derive a mathematical expression for its magnifying power.
What is a capacitor and measure capacitance of (i) of a plane plate capacitor (ii) of a cylindrical capacitor (iii) of a spherical capacitor
construction of nand gate?
Demonstrating how the angle of the sun's rays changes from day to day at the same hour Cut a 1-cm round hole in a piece of paper or cardboard. Place this in a south window of y
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