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Q. The resistance of a nichrome wire at 0oC is 10 Ω. If the temperature coefficient of resistance is 0.004/ o C, find its resistance at boiling point of water. Comment on the resul
In an amusement park ride called The Roundup, passengers stand inside a 19.0 -diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane.
The radioactive isotope D decays according to the sequence If the mass number and atomic number of D2 are 176 and 71 respectively, what is (i) the mass number (ii) atomic
Q. What are the characteristics of laser beam? Characteristics of laser The laser beam (a) is monochromatic. (b) is coherent with the waves all exactly in phase with o
A body which gets its real configuration immediately and completely after the removal of deforming force from it, is called as perfectly elastic body. Phosphor bronze and quartz ar
Illustrate what is a positron? Answer:- A positron is a positively charged electron and it's an anti-electron - antimatter! The positron has a charge of +1 just the opposi
Q. Give any three properties of electric lines of force. Properties of lines of forces: (i) Lines of force begin from positive charge and terminate at negative charge. (ii
When a radar gun says the pitch is 90 miles per hour at what point in the balls travel to home plate is the radar gun measuring the velocity? The measurement is made at the po
It is desired to lessen the reflection of light by the outer surfaces of the objective lenses of a pair of binoculars. These surfaces are the foremost surfaces that light hits on e
Heat is the energy that is operated because of differences in temperature among the body and the surrounding. The unit of heat energy is Joule. The basic difference among study
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