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why electron move in orbit
Two point changes q1 and q2 are placed at a distance r from one another then electrostatic potential energy of two phase charge system will be kq 1 q 2 /r . We take P.E. of two ch
what is Friction When we think about friction, there is one more place for energy to go - heat. When you push a book across a table, does the energy of the book change? Not if in
#question.1) [chp 2; NC] You drop a superball from your dormitory window, a height, h=30 m, above the ground. 1 s after this your friend shoots a superball straight upward toward t
How do you calculate tensile strength? Tensile strength isn't really measured; it's calculated. It is explained as the point at which a sample of material fails when subjected
Electrical work: Electrical work is done if a quantity of charge (coulombs) is moved between two points which are at different electrical potentials. The SI unit of work
Charging: During charging the device is linked across a source of D.C. supply having a voltage of about 3 volts. When the circuit is switched on the current flows inside the cell
Surface gravity on Mars is roughly 1/3 that of the Earth. Consider you drop a rock initially at rest from a height Hm on Mars and it takes a time tg to hit the ground. From what he
Why is the Kinetic energy of the system minimum in the frame of the center of mass for any number of particles solution) The kinetic energy of any entity depends on the reference
Centrifugal pseudoforce A pseudoforce which occurs while one is moving in consistent circular motion. One feels a "force" directed outward from the center of motion.
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