Ventilation of room work on

1.	Ventilation of room work on
Answer» tion:The general purpose of VENTILATION in buildings is to PROVIDE healthy air for breathing by both diluting the pollutants originating in the building and removing the pollutants from it (Etheridge & Sandberg, 1996; Awbi, 2003).

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consider the equation x=A sin (wt + pi/2) for a vibration object, where A is the amplitude. The Initial position of the object will be?
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