GENERAL KNOWLEDGE

GK

ELEMENTS COMPOUNDS SUBSTANCES METALS AND NON METALS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A particle may be
A
an atom
B
an isotope
C
a molecule
D
all of these
Explanation: 

Detailed explanation-1: -Nuclear Energy: All objects are made up of particles called atoms. The region in the center of an atom is called a nucleus. A type of potential energy called nuclear energy is stored in the nucleus of an atom.

Detailed explanation-2: -particle. noun. par·ti·cle ˈpärt-i-kəl. : one of the very small parts of matter (as a molecule, atom, or electron) : a very small quantity or piece.

Detailed explanation-3: -The sum of all the particles in the system’s moments about COM is always zero. When we multiply a particle’s mass by its directed distance from this point, we get the particle’s moment. It measures the tendency of the mass to produce a rotation about that point.

Detailed explanation-4: -Center of Mass of a Two-Particle System (m1+m2) rcm =m1 r1+m2 r2. The product of the total mass of the system and the position vector of the center of mass is equal to the sum of the products of the masses of the two particles and their respective position vectors.

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