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Mechanical energy E of particle, system or object is explained as the sum of kinetic energy K and potential energy U, i.e. E = K + U. It is a scalar quantity having dimensions [ML2T-2] and SI unit joule.
(i) It relays on frame of reference.
(ii) A body may have mechanical energy without having either kinetic energy or potential energy. Though, if both potential and kinetic energies are zero, mechanical energy will be zero. The result may or may not be true, i.e., if E = 0 either both KE and PE are zero or PE negative and KE positive such that KE + PE = 0
A small air bubble is inside a cube of 0.21 m. When viewed from one face it seems to be at a depth of 0.06 m, when viewed from opposite face the bubble seems to be at a depth of 0.
Discuss the diffraction of light through n slits using plane transmission grating.
A baseball bat strikes a ball with a force of 30 newtons. If the ball was in contact with the bat for 1/10 of a second, What impulse did the ball receive? Ans - 3 Newt
Hawking radiation (S.W. Hawking; 1973): Black holes emit radiation such as any other hot body. Virtual particle-antiparticle pairs are being formed in supposedly empty space c
Write down the Maxwell's equation in differential form for free space.
Beryllium copper alloy: It is obtained by alloying copper and beryllium. These alloys containing beryllium up to 2.75% can be produced in the form of sheet, rod, wire and tube. Be
when a body is thrown upwards, its velocity becomes zero at the highest point. what will be its acceleration at this point?
Although conduction does occur in liquids and gases also, heat is transmitting in these media mostly by convection. In that phenomenon, the real motion of the material is responsib
Edwards-Casimir quantum vacuum drive A hypothetical drive exploiting the peculiarities of quantum mechanics through limiting allowed wavelengths of virtual photons on one side
Using Gauss divergence theorem show that the volume of a sphere of radius 'r' is 4⁄3 πr 3 .
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