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Two charges eachof q=+2 micro coloumb are placed at the vertices Q and R of the triangle .the sum of sides PQ and PR is 12cm and their product is 32 cm_2 .the potential at point P is?Solution) In ΔPQR, Let PQ=8cm PR=4cmAt P, V=9*109 {(2/4) + (2/8)}*10-6*102 = 9*109*(3/4)*10-4 = 6.75*105
A sprinter runs 100.0 m. If he travels at constant acceleration of 1.95 m/s2 for the first 6.00 s, and then at constant velocity for the remaining time, what was his average veloci
A rock is thrown upward with a speed of 26 m/s. How long after it is thrown will the rock have a velocity of 48 m/s toward the ground?
Define, with the help of a schematic diagram, the principle and working of a Light Emitting Diode. What criterion is kept in mind whereas choosing the semiconductor material for su
Consider a pentavalent impurity such as phosphorus (P, Z = 15) is doped in a pure semiconductor germanium (Ge, Z = 320. Each phosphorus atom forms four covalent bonds with four ger
Can fibers be bent at right angle? Fibers cannot be bent at right angle. All fibers should be bent with a radius that will not alter the internal architecture of the fiber. For
A 350-Hz tuning fork is held over the end of a pipe that is inserted into water. What is the spacing between the resonance lengths of the pipe if the speed of sound is 348 m/s
(i) Effect of temperature: (a) In general elasticity reduces as the temperature increases. (b) Invar is an exception. There is no effect of temperature on elasticity of in
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
(i) Time section of vibration of particle is described as the time taken by the particle to complete single vibration about its mean position. (ii) It is the time given by the r
A mass m rotating freely in a horizontal circle of radius 1 m on a frictionless smooth table supports a stationary mass 2m, attached to the other end of the string passing through
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