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ROCKET PROPULSION:
The motion of a rocket is an application of the law of conservation of momentum and Newton's 3rd law of motion. The gases ejected out from the combustion chamber of the rocket, move downward and gain a downward momentum and the rocket moves upward to balance the momentum of gases.
distinguish feature of litearay writing
Presbyopia: The accommodation power of a person is lost by which the suffers a long sightedness. It is known as Presbyopia or lack of accommodation.
An object is thrown downward from a 150 cliff so that it makes an angle of 30 with the horizontal. (a) How fast will it be going when it hits the ground? (b) How long will it take
1. How fast must an object travel for its total energy to be (a) 1% more than its rest energy and (b) 99% more than its rest energy. 2. A proton is moving with a constant speed
a body is thrown horizontally with a velocity of u from the top of a tower. the displacement of the stone when the horizontal and vertical velocities are equal is
When a pulse is reflected from a free side, then there is no changing of medium. Crest (C) represents as crest (C) and trough (T) denotes as trough (T), Time changes by zero and
IONIC BOND Ionic bonding involves the transfer of electrons from an electropositive atom (an atom that tends to "donate" an electron) to an electronegative atom (an atom that t
When deforming forces are applied to a body, there is a change in the size of the body. The object is known as strained or deformed. The ratio of change in dimension to the origina
When is a system said to have attained equilibrium. Illustrate. The change in entropy of a system, in a procedure is positive. Would the process be a spontaneous one? Describe.
What are Switches and Fuses? As mentioned earlier, short circuits can be damaging to the voltage source. One way we have developed to protect equipment is to use fuses i
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