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When a driver brakes an automobile, the friction between the brake drums and the brake shoes converts the car's kinetic energy to thermal energy. If a 1450 kg automobile traveling at 35 m/s comes to a halt, how much does the temperature rise in each of the four8.0 kg iron brake drums? (The specific heat of iron is 448J/kg°C.) answer in degrees Celsius
Ampere; A (after A.M. Ampere, 1775-1836) The basic SI unit of electric current, described as the current that, while going through two infinitely-long parallel conductors of ne
Q The resistance of a platinum wire at 0 o C is 4 Ω. What will be the resistance at 100 o C, if the temperature coefficient of resistance is 0.0038/ o C. Resistance at 100 o
If in a thermoelectric series current flows from the metal occurring earlier in the series to metal occurring later through the cold junction, why in a copper-iron thermocouple, th
A transformer takes a current of 1A when its primary is connected to a 300V, 50Hz supply, the secondary being on open-circuit. If the power absorbed is 120watts, Determine
how to measure least count of the instruments?
describe the cnstruction of optical fiber
Propagation of an Electromagnetic Wave Electromagnetic waves are waves that can travel by the vacuum of outer space. Mechanical waves, not like electromagnetic waves, need the
Q. Write down two important facts of Laue experiment on X-ray diffraction. The Laue experiment has established subsequent two important facts (1) X-rays are electromagnetic
Q. Define the unit of self inductance. One henry is described as the self-inductance of a coil in which a change in current of one ampere per second produces an opposing emf of
Q. What is pair production and pair annihilation? Pair production: The conversion of a photon in to an electron-positron pair on its interaction with the strong electric fie
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