Document page
igcse physics notesprinted 57 · PDF 57
124 pagesrevision 46936
printed 57 · PDF 57
Page image rendered from the stored file at 110 dpi; it sharpens as you zoom. Outlines are placed from each region’s stored position on the page (612 × 792 pt).
readable
Source of this text: embedded text layer. The better of the embedded text and OCR is kept.
57
In the above example we can see that the water with most depth is
released with greatest pressure and moves the furthest whereas water with
lowest depth has lowest pressure and covers least distance.
To find out pressure or volume in gasses we have the formula P1V1=P2V2
where “P1” is initial pressure of gas in a fixed volume “V1” and “P2” is final
pressure of gas in a different fixed volume “V2”
By this equation we conclude that pressure is inversely proportional to
volume which means that if we decrease the volume of gas trapped then
pressure increases and vice Versa.
Whenever question asks to find total pressure exerted on an object in
specific depth in any liquid and liquid is open in atmosphere then to find
final total pressure we have to add atmospheric pressure as well i.e
100,000Pa
Therefore the formula for total pressure exerted on an object in liquid which
is open to atmosphere is ρgh+atm(atmospheric pressure)