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Van der Waals force (J.D. van der Waals):
It is the forces which is responsible for the non-ideal behavior of gases, & lattice energy of molecular crystals. There are three causes: dipole-induced dipole moments; dipole-dipole interaction; and dispersion forces arising due to small instantaneous dipoles in atoms.
A weakly guiding optical fibre propagates just two bound modes with scalar transverse electric fields ψ 1 (x,y) and ψ 2 (x,y), and propagation constants β1 and β2, respectively. At
Wave motion is the phenomenon in which the particle/matter ruins at the point where it is. But the disturbance/energy get transferred from one point to the other. The particle ju
1. A given radioactive sample emits only one type of radiation. When placed in a counter for 10 minutes, 1632 counts are registered. Then the sample is removed and a background
A dragster begins from rest and accelerates for 4.0 s at a rate of 5.0 m/s2. It then travels at a constant speed for 2.5 s. A parachute opens, stopping the vehicle at a constant ra
Q When calculate Planck's constant, a student's calculations produce values of 5.78 × 10 -34 J·s and 7.29 × 10 -34 J·s. If the accepted value is 6.63 × 10 -34 J·s, what is
As per the most established theory it is because of the rotation of the earth where by the several charged ions there in the molten state in the core of the earth rotate and consti
A 25cm long conductor moves at a uniform speed of 8m/s by a uniform magnetic field of flux density 1.2T. Verify the current flowing in the conductor when (a) Its ends are o
A step-up transformer has a primary coil having of 152 turns and a secondary coil with 3040 turns. The primary coil receives a peak voltage of 98 V. a. What is the effectiv
Twin paradox: One of the most popular "paradoxes" in history, predicted trhough A. Einstein's special theory of relativity. Take two twins, born on the similar date on Earth.
Precaution to minimize Radiation Danger: 1. One should keep safe distance away from radiation emitting source. 2. The radiation from the reactor are shielded by thick concr
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