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Rules to verify how many significant numbers has in a calculated quantity:
1. All nonzero digits are significant. As like 457 cm has three significant values; 0.25 g has two significant figures.
2. Zeros among nonzero digits are significant. As like, 1005 kg has four significant values; 1.03 cm has three significant values.
3. Zeros to the left of the first nonzero digits in a number are not significant; they merely indicate the position of the decimal point. As like, 0.02g has one important value; 0.0026 cm has two important figures.
4. When a number ends in zeros that are to the right of the decimal point, they are important. As like, 0.0200g has three important values; 3.0cm has two important figures.
Brownian motion (R. Brown; 1827) It is the continuous random motion of solid microscopic particles while suspended in a fluid medium because of the consequence of ongoing bomb
All the given four Laws may be written in one relation, PV = nRT =m/n RT This formula is known as deal gas equation. Where m = mass of the gas M = molecular mass of t
An organ pipe which is open at both ends resonates at its fundamental frequency. Neglecting any end effects, what wavelength is formed by this pipe in this mode of vibration i
Positive rays are sometimes called as the canal waves. These were found by Goldstein. If the cathode of a discharged tube has holes in it and the pressure of the gas is around 10-3
There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a
(i) It is also known as impure semiconductor. (ii) The phenomena of adding impurity is known as Doping.
Wien displacement law: For blackbody, the product of the wavelength equivalent to the maximum radiancy and the thermodynamic temperature is a constant, the Wien displacement l
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The effects of short circuits: A short circuit is a path for current where a path should not exist, the path is generally considered to have a low resistance. If a short circui
How are fiber optic made? The actual process varies significantly from one manufacturer to other. In essence, a huge cylinder of core is made off high purity material, an eleme
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