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IONIC BOND Ionic bonding involves the transfer of electrons from an electropositive atom (an atom that tends to "donate" an electron) to an electronegative atom (an atom that t
Planck constant; h: The fundamental constant equivalent to the ratio of the energy of a quantum of energy to its frequency. It refer to the quantum of action. This contains th
An electron, an alpha-particle and a proton have the similar kinetic energy. Which one of these particles has the main de-Broglie wavelength?
Calculate the heat required to melt 316.7kg of potassium metal at 336 K. The enthalpy of fusion of potassium is 2.35 kJ mol -1 .
Write a short (approx. one page) review of the contribution of one of the following people to the historical development of Physics; Aristotle Ibn al-Haytham Ga
Describe power of a lens. Write its SI unit. What do you mean by linear magnification produced by a lens in a direction perpendicular to its axis? Write down the mathematical expre
Defects of vision and their correction There is a simple relationship between the focal length F ,the object distance P and the image distance Q of a thin lens fig(1).
The system below consist of identical massed (m1, and m2) that are connected by a string of negligible mass. Mass m1, is on a frictionless horizontal surface. The string runs over
if 2.13*106J of work must be done on a roller_coaster car to move it 3.00*102m,how large is the net force acting on the car ?
Chemical action in lead acid battery: When the lead acid battery is delivering current, the sulphuric acid breaks up into Hydrogen ions (H 2 ) carrying a positive charge and Su
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