मज़ेदार ट्रिक for Addition of Table|Fast calculation Trick#Mathtrick#Magictrick#shorts

Calculation OF deltaH||deltaE||q||W for Chemical Reaction|| Phase Change||Class Illustrations with Short Tricks

A pair of parallel horizontal conducting rails of negligible resistance shorted at one end is fixed on a table. The distance between the rails is L . A conducting massless rod of resistance R can slide on the rails frictionlessly. The rod is tied to a massless string which passes over a pulley fixed to the edge of the table. A mass m tied to the other end of the string hangs vertically. A constant magnetic field B exists perpendicular to the table. If the system is released from rest, calculate a. the terminal velocity achieved by the rod and b. The acceleration of the mass of the instant when the velocity of the rod is half the terminal velocity.

When subatomic particles undergo reaction energy is conserved, but mass is not necessarily conserved. However, a particle's mass 'contributes' to its total energy, in accordance with Einstein'f famouns equation, E= mc^(2) In this question, E denotes the equivalent energy when a particle of mass m is converted into energy. The particle can also have additional energy due to its motion and its interactions with other particles. Consider a neutron at rest, and well separated from other particles. It decays into a proton, an electron, and an undetected third particle: "Neutron"rarr"proton"+"electron"+"third particle" The table below summarizes some data from a single nuetron decay. Column 2 shows the rest mass of the particle times the speed of light squared. {:("Particle",Mx C^(2),,"Kinetic Energy",),(,(MeV),,(MeV),),("Neutron",940.97,,0,),("Proton",939.66,,0.02,),("Electron",0.51,,0.42,):} From the given table, which properties of the undetected third particle can we calculate ?

The follwing table illustrates the multiplier process after making an additional of Rs. 1,000 crores. Calculate the messing values.

A pair of parallel horizontal conducting rails of negligible resistance shorted at one end is fixed on a table. The distance between the rails is L. A conducting massless rod of resistance R can slide on the rails frictionlessly. The rod is tied to a massless string which passes over a pulley fixed to the edge of the table, A mass m, tied to the other end of the string hanges vertically. A constant magnetic field B exists perpendicular to the table. If the system is released from rest, calculate. (i) the terminal velocity achieved by the rod, and the acceleration of the mass at the instant when the velocity of the rod is half the terminal velocity.