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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 l2=4Given radius r1=1 r2=2 Given specific resistances Ρ(rho)1=3 Ρ2= 1we know the R=Ρl/A R1/R2=3/1.
at what velocity a clock should move so that it seems slow by one minute in a day?
In the nucleus of 20 Ca 40 there are: (1) 40 protons and 20 electrons (2) 20 protons and 40 electrons (3) 20 protons and 20 neutrons (4) 20 protons and 40 neutrons
De?ne Pilling-Bed Worth rule. Write about the applications of carbon nanotubes and nanowires.
What is physics?
Electrons travelling at right angles to a magnetic field experience a force of 8.3 x 10 -13 N when they are in a magnetic field of 6.2 x 10 -1 T. How fast are the electrons
Conductor: Conductors are those substances which permit electric current to passes easily by them. e.g. Metal, impure, water etc.
Fresnel''s diffraction due to a straight edge?
The process of apparent change in frequency (or wavelength) of the light because of relative motion among the source of light and the observer is known as Doppler's effect.
Coulomb: Coulomb is the fundamental unit of charge. It is explained as the charge required to obtain 9?109 newton of force among two equal charges separated at a distance of one m
OBLIQUE COLLISION
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