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Echo vs. Reverberation
Sound is a mechanical wave that travels by a medium from a single location to other. This motion by a medium occurs as one particle of the medium interacts along with its neighbouring particle, transmitting the mechanical motion and corresponding energy to it. This transport of mechanical energy by a medium through particle interaction is what forms a sound wave a mechanical wave.
What is free fall acceleration? On earth free fall acceleration is 9.81 meters per second per second or 32.2 feet per second per second, not containing air resistance. Aroun
A radiation of 500nm is incident on a metal surface whose work function is 3ev.why do we not observe the phenomenon of photoelectric effect? Ans) Because the energy of radiation i
A ball dropped from a balloon at rest clears a tower 81m high during the last quater second of its journey. Find the height of the balloon and the velocity of the body when it rea
Wien displacement law: For blackbody, the product of the wavelength equivalent to the maximum radiancy and the thermodynamic temperature is a constant, the Wien displacement l
Right-Hand Screw Rule In physics, the right-hand rule is a general mnemonic for understanding notation conventions for vectors in 3 dimensions. It was invented for use in elect
What is meant by the sensitivity of a potentiometer? A battery E 1 of 4 V and a variable resistance R h are linked in series with the wire AB of the potentiometer. The length
why we take large radius of curvature of lens
De?ne reduction potential and oxidation potential. Reduction potential of a metal is the measure of tendency of a metallic electrode to gain electrons when it is in contact wit
The vapour pressure of a substance at 20.0 o C is 38.1 kPa and its enthalpy of vaporisation is 49.6 kJ mol -1 . Estimate the temperature at which its vapour pressure is 80.0 k
advantages and disadvantages
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