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An elementary particle is:
(1)An element present in a compound
(2)An atom present in an element
(3)A sub-atomic particle
(4)A fragment of an atom
Ans: (3)A sub-atomic particle
Musical Sounds: Sound that produces pleasant effects on our ear is known as musical sound. Such as sound of flute, violin.
speed of a car
Q. What is artificial radioactivity? The phenomenon by which still light elements are made radioactive by artificial or induced methods is called artificial radioactivity. α
Explain the Natural Frequencies and Resonance Standing waves occur when the waves, like those in a vibrating piece of rope, are repeating so that there are places on the rope t
(1) Holes works as virtual charge, although there is no charge on holes. (2) Effectual volume of hole is more than electron. (3) Mobility of hole is fewer than electron.
Conventional Current: Earlier scientists had no knowledge of the concept of electron, so the developed the convention, still in use, , that the direction of current is for appo
Q. What is ionisation potential energy? For hydrogen atom the energy necessary to remove an electron from first orbit to its outermost orbit (n=∞) is 13.6-0 = 13.6eV. This ene
Phenomenon of resonance At resonance, rapid transfer of energy takes place resulting louder sound (booming sound). If two bodies having same natural frequency is placed side b
Copper Atomic number 29 Symbol Cu Atomic weight 63.546 Discovery Cu has
if 2.13*106J of work must be done on a roller_coaster car to move it 3.00*102m,how large is the net force acting on the car ?
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