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ENERGY LEVELS
The energy levels, measured in electron volts (e.v.) in which orbiting electrons exist comply with a law of physics which states that energy can be given to electrons only in discrete amounts (quanta) which means that there are energy values that an electron cannot acquire. From this it can be deducted that there is a forbidden energy gap between each of the allowed energy bands K to O.
The width of the forbidden energy gap between the top of the valence band and the bottom of the conduction band determine the electrical conducting properties of materials.
A medium is known as denser if the velocity of ray in that phase is fewer than the speed of the wave in other phase. In comparison to air velocity of sound is main in water,
How Far Will It Skid? Most drivers' education classes teach future drivers in which the stopping distance of a skidding car is in a straight line proportional to the square of
Bronze: Copper when alloyed with tin (8% to 16%) and a very small percentage of a third element like cadmium, beryllium, phosphorous, silicon etc, is called Bronze. Bronzes are gi
A 0.17-kg hockey puck leaves the stick on a slap shot travelling 21 m/s. If no other forces act on the puck, friction eventually will bring it to rest 62 m away. a. Based on th
The cable will fail when the tension is P54 kN. For a Factor of Safety of 1.5 for the cable, determine the largest vertical load P that the frame will support, and then for that lo
An electric iron draws a current of 0.5A.The voltage is 200V. Calculate the amount of charge flowing through it in 1 hour.
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
In an electric field rate of change of potential with distance is called as potential gradient. It is a vector quantity and its direction is differing to that of electric field. Po
Ask questidefination and explanation of pesudo force on #Minimum 100 words accepted#
A sled and its rider, with a total mass of 95 kg, are perched on top of a 25-m-tall hill. A second hill is 12 m tall (see the diagram below). The rider is given an initial push
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