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Alternating Current: (AC)
Such a current can be obtained if a resistor is linked in series with a source of alternating voltage. This current alters its direction so many times in a second.
Historical development of atomic models In olden days there was an idea that all matter is made of tiny indivisible particles. When Thomson discovered electron, this idea
How does laser printer works? When a text or image is entered into the CPU, it makes a series of varying voltages. This controls a LED (light emitting diode) in the printer. Th
What is an asteroid, comet, dwarf planet with respect to their mass, moment of inertia and dimension? Ans) Dwarf Planet is lighter,smaller than a planet ( Pluto ).They usually a
The Broken Pencil-Ray Optics A general classroom demonstration includes placing a pencil (or similar object) within an upright position within a round glass of water. The penci
1st law -What is the significance of the second foci of the elliptical orbit? 2nd law -if the speed of the planet changes,why donot we feel it?
Determine the change in entropy when 2 kg of a gas at 277 K is heated in a closed, rigid container to a temperature of 368 K. Take the specific heat at constant volume to be 1.42 K
what is alternating current
Q. Show the condition for dispersion without deviation? Q. A thin convex length of focal length 0.1m and a thin concave lens of focal length 0.1m are placed coaxially on contact
A student sits on a stool holding a 5.0-kg dumbbell in both hands. He extends his arms such that each dumbbell is 0.60 m from the axis of rotation. The student's moment of
Explain Brewster's experiment and describe how Brewster's law was formulated.
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