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What is density?
Density is a physical characteristic, and calculates of mass per unit of volume of a material or substance. It is a measurement of the quantity of matter in a given volume of something.
The higher an object's density, the higher it's mass per unit of volume. The average density of an object equivalent its total mass divided by its total volume. A denser object (like iron) will have less volume than an equal mass of some less dense substance (like water).
With the help of a bb diagram, define the principle of an optical communication system. Give its two advantages over cable communication system
Primary cell Is that cell in which electrical energy is produced because of chemical energy. In the primary cell, chemical reaction is irreversible. This cell cannot be recharged.
The following three impedances are connected in series across a 40V, 20kHz supply: (i) a resistance of 8, (ii) a coil of inductance 130µHand5 resistance, and (iii) a 10 r
Platinum: Atomic number 78 Symbol p t Atomic weight 195.09 Discovery Olloa 1735
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A sample of argon of mass 10.4 g occupies 2100 ml at 30 o C . (i) Calculate the work done by the gas when it expands isothermally against a constant external pressure of 3
Explain Electromagnetism
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