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ACCELERATION DUE TO GRAVITY.
In the absence of air resistance, all objects in free fall near the surface of the earth move in the direction of the earth with a uniform acceleration. This acceleration is called as acceleration because of gravity.
An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a constant speed for 35 seconds. Finally, it slows do
1. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. II. The relationship between an object''s mass m,
What mechanical and electronic device has a name derived from a Czechoslovakian word meaning "work; compulsory service"? Ans: From a Czechoslovakian word meaning "work; com
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
faint, young sun paradox Theories of stellar evolution denote that as stars mature over the main sequence, they steadily grow hotter & brighter; calculations recommend that at
Alnico is a family of alloys containing metals Fe, Co and Ni plus small amount of Al and copper. These alloys are directionally solidified and subsequently given a heat treatment t
An isotope of iodine (Z = 53) is used to treat thyroid conditions. Its mass number is 131. How many neutrons are in its nucleus? 131 - 53 = 78 neutrons
NEWTON'S FIRST LAW AND INERTIA: All the material bodies possess the property of opposing any alter in the state of rest or uniform motion when some external force is applies up
Q. Escape Velocity An object will conquer the force of gravity when its kinetic energy in the direction away from earth exceeds its potential energy. We find the smallest kinet
Ergosphere The region about a rotating black hole, among the event horizon & the static limit, where rotational energy can be extracted through black hole.
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