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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.
A rocket weighs 9800N. What applied force gives it a vertical acceleration of 4m/sec/sec?
The device which changes chemical energy into electrical energy is called as electric cell. Battery is a host of constant emf but not constant current.
Conclusion of photoelectric effect
Kerr effect (J. Kerr; 1875): The ability of certain substances to refract light waves differently whose vibrations are in distinct directions while the substance is placed wit
m2, 8.5 kg, is accelerating down an incline at a constant rate. m1 is being pulled by a string attached between the two masses. The coefficient of friction between m1 and the horiz
what make flashlight suddenly become dim or bright when you shake it?
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 4.40 m above. The brother's outstretched hand catches the keys 1.30 s later. (a) W
An x-ray photon collides with a free electron, and the photon is scattered. During this collision there is conservation of: a) Momentum but not energy b) Neither momentu
Q. What are coherent sources? Two sources are alleged to be coherent if they emit light waves of the same wave length and start with same phase or have a constant phase differ
why laser show beat phenomenon while LIGHT do not.
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