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Copernican principle (N. Copernicus)
The idea, recommended by Copernicus, that the Sun, not the Earth, is at the middle of the Universe. Now we know that neither idea is accurate (the Sun is not even situated at the middle of our Galaxy, much less the Universe), but it locate into effect a long chain of demotions of Earth's and our place in the Universe, to where it is currently: On an unimpressive planet orbiting a mediocre star into a corner of a typical galaxy, lost in the Universe.
It determines the probability of an electron occupying a state at an energy level E. This takes into account that a collection of electron must obey the Pauli Exclusion Principle.
The size of nucleus is measured in: (1)amu (2)Angstrom (3)Fermi (4)cm Ans: (3)Fermi
Presume that you are asked to find the image position in a problem involving a lens. You are specified the object position and you are told that the lens is a concave lens whose fo
A proton (mass = 1.67 x 10 -26 kg charge = 1.60 x 10 -19 C) is running at a speed of 8.50 x 10 4 m/s at a point in an evacuated region of space where the electric potential is 3
Cosmological redshift An effect where light emitted through a distant source seems redshifted due to the expansion of spacetime itself.
Agriculture: 1. Radio isotopes are used to verify the optimum amount of fertilizer for the plants. 2. It is used to kill bacteria and conserved food stuff. 3. It is used
The contribution of ionic polarization takes account of the fact that when in a molecule some of the atoms have an excess positive or negative charge (resulting from the ionic char
What is an alloy? An alloy is a homogeneous hybrid of two or more elements, at least one of which is a metal, and where the resulting material has metallic properties. The resu
An air stream is saturated with a vapor (B) at 130°F and 1 atm pressure. It is cooled down to 80°F where some of the B is condensed and separated from the vapor stream. The remai
Alpha particles are nuclei of: a) Hydrogen b) Helium c) Oxygen d) Nitrogen Ans: Alpha particles are nuclei of helium.
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