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AMPLITUDE -- THE MAXIMUM DISPLACEMENT OF A VIBRATING OBJECT FROM ITS CENTRAL POSITION.....
Frequency -- the number of oscillation per second........
Time period.-- the time taken by A vibrating ( oscillating ) object to complete one vibration....
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The warmer and less dense air near the ground rises during the day pulling more air through the valley floor. This gentle upslope wind known as a valley breeze. The flow of air reverses as the sun is going down and at night. This is because the mountain slopes at higher elevations cool quicker than the valleys.
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