Explain how many more times louder is 70 decibels than 10 decibels?
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Explain the cause of brownian motion?
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The throbbing caused by sounds of slightly different frequencies that results because of periodic constructive and destructive interference is called:
When a glass cylinder is filled with water and a piece of thick paper is placed at the mouth and the cylinder is inverted, the paper dies not fall. Why ?
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Give one advantage of a scanning electron microscope over a transmission electron microscope?
Explain the Welding ?
Explain the Strain ?
what is Gauge?
Please define e.s.u. it is the unit of ...... It is equal to .....