1.

Torricell 's barometer used mercury . Pascal duplicated it using French wine of density 984kgm^(-3) . Determine the height of the wine column for nirmal atmospheric pressure.

Answer»

Solution :Normal atmosphetic pressure `P_(a)=1.03xx10^(5)` PA Suppose the height of French wine column is h and corresponding pressure P.
`thereforeP=grhog` where `rho` = DENSITY of wine `=984kgm^(-3)`
GIVE that `P.=P_(a)`
`hrhog=P_(a)`
`thereforeh=(P_(a))/(rhog)`
`thereforeh=(P_(a))/(rhog)`
`thereforeh=(1.013xx10^(5))/(984xx9.8)`
`thereforeh=0.000105xx10^(5)`
`thereforeh=10.5m`


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