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Reducing friction with ball bearings
Find two tin cans that have a deep groove approximately the top, such as paint cans. Lay marbles in single groove and invert the other can over the marbles to form a ball bearing. Place a book on top and note how simply the demonstration bearing turns. Oil the marbles and it will turn still more easily.
Which of the following colours of visible light has the longest wavelength? Is it: a) Violet b) Green c) Yellow d) Red Ans: Red colour of visible light h
In X-ray tube, when high speed electrons strike the target, they move into the target. They lose their kinetic energy and come to rest inside the solid. The electron because of fin
What are the disadvantages of fibers optics? This must be borne in mind that the real nature of the conductor, in lighting systems, shows only one of the components responsible
what is physics
Real ball bearings Study real ball bearings and roller bearings. Make a list of devices that having ball bearings or roller bearings.
Frequency:- The number of vibration done per second by an oscillation body is known its frequency. It is denoted by V. The S.I unit is Hz.
As we know photon's spin is one, how lots CPH (that have spin) is able keep the spin of photon? Answer; the photon spin like electron spin comes up of its properties and indepe
a. A certain radioactive material emits gamma rays with energy 1 MeV. Another sample of radioactive material emits gamma rays with energy 10 keV. If both of these emit the same amo
Q. Point out the direction of the current if any induced to flow in the loop by the changing magnetic field. (Describe is the loop as viewed from above.)s Answer: 1.
varacter diode
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