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Explain Electricity and static electricity
Electricity - study of stationary (static) or moving charges
Static Electricitiy (Electrostatics) - electric charges at rest
Two types of charges: (i) negative (electrons, negative ions);
(ii) positive (protons, positive ions)
A worker lifts a 10 kilogram block a vertical height of 2 meters. The work he does on the block is: a) 5 Joules b) 20 Joules c) 49 Joules d) 200 Joules Ans:
Q. What are leptons? Give examples. Leptons: Leptons are lighter particles having mass equal to or less than about 207 times the mass of an electron except neutrino an
The Bubble''s shape is spherical so as to reduce the surface tension. With the given volume of liquid,Spherical surface only fits i minimizing the surface tension to a greater exte
Q. What is efficiency of a transformer? Efficiency of a transformer is described as the ratio of output power to the input power. η= output power / input power
Derive an expression for the velocity of transerve wave in stretched uniform string
CAN YOU GIVE SOME EXAMPLE OF FREE FALL ACTIVITIES
Two forces P & 2P act on the particle if the first is doubled & the second enhanced by 20N.The direction of the resultant remains unchanged. What is the value of P.
In accrued model of a rotating diatomic molecule of (Cl 2 ), the two Cl atoms are 2.00´ 10? -10 m apart and rotate about their center of mass with angular speed w = 2.00 ´10 12 ra
An object is placed at a distance of 0.12m from a convex lens forms an image at a distance of 0.18m. Determine the magnification produced.
Surface Imperfection: These are two dimensional and refer to a region of distortions that lies around a surface having a thickness of a some atomic diameters.
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