Define Kirkwood gaps
Kirkwood gaps (Kirkwood): The gaps in the asteroid belt, caused by the resonance effects from Jupiter. Similar gaps are also exists in Saturn's rings, due to the resonance effects of the shepherd moons.
Tardon: A particle that has a positive real mass and travels at a speed very less than c in all inertial frames.
What do you mean by communication? Illustrate in brief.
Pauli Exclusion Principle (W. Pauli; 1925): No two similar fermions in a system, like electrons in an atom, can contain an identical set of the quantum numbers.
Describe briefly all the Law of Machines?
The velocity of a body was observed to be constant throughout five minutes of its motion. Determine its acceleration during this interval?
Give one benefit of a scanning electron microscope over the transmission electron microscope? Briefly explain it.
Defining Aberration: The obvious change in the position of a light-emitting object due to the fidelity of the speed of light and the
Metre: meter; m: The basic SI unit of length, stated as the length of the path traveled by light in vacuum throughout a period of 1/299 792 458 s.
Hubble constant: H0 (E.P. Hubble; 1925): The constant that determines the relationship among the distance to a galaxy and its velocity of recession due to the growth of the Universe. As the Universe is self-gravitating, it is not trut
Gray: Gy (after L.H. Gray, 1905-1965): The derived SI unit of engrossed dose, stated as the absorbed dose in which the energy per unit mass communicated to the matter by the ionizing radiation is 1 J/kg; it therefore has units of J/kg
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