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A bob hanged to astrirg in a box .it is displaced to an agle of 45 .then fid the acceleration of the box at this moment.Ans) gsin45,that is 10/1.4142.as it would have only tangential accelaration.
(a) Two55 g ice cubes are dropped into300 g of water in a thermally insulated container. If the water was initially at 25°C, and the ice came directly from a freezer at -15°C, what
It is the property of a material by virtue of which it allows itself to be magnetized. Permeability varies from material to material depending upon the saturation and temperature.
This is due to the surface tension of water. Because of the surface tension , the drop tends to have minimum possible surface area, and the shape which is possible with minimum su
Explain the Optical Instruments? The lenses you use most often are the ones in your eyes. The front of your eye has a convex lens whose focal length can be changed by the muscl
When two part of progressive ray trains of similar type having the same amplitude and similar time period/ wavelength/ frequency traveling with similar velocity along the similar s
Q. When there is no feedback, the gain of the amplifier is 100. If 5% of the output voltage is fed back into the input through a negative network, find the voltage gain after feedb
Inductors: Coils which are used for their opposition to current change in a circuit are known as inductors or chokes. CONSTRUCTION Inductors with an air core have small
Q State Faraday's laws of electrolysis? First Law: The mass of a substance unconventional at an electrode is directly proportional to the charge passing through the electrol
Steelyards Either Roman or Danish steelyards can be improvised using short lengths of lead or iron water pipe as counter-weights and loops of wire s pivots. The rod can be o
At what temperature would the average speed of helium atoms equal (a)the escape speed from Earth, 1.12 ´ 10 4 m/s, and (b) the escape speed from the Moon, 2.37´ 10 3 m/s? (See Ch
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