Vapour Pressure

Example 3:

At a certain depth of a liquid where the pressure is 850 N/cm2 what will be the change in specific volume and specific weight with respect to the surface? Given that the specific weight of that liquid at the surface is 1025 N/cm3 and the bulk modulus of elasticity is 24x10 3 N/cm3 .

Solution :  

Given data:    Specific weight at surface = 1025 N/cm3
                       Bulk modulus = 24x10 3 N/cm3
                       Pressure at the surface is assumed to be zero
                      Change of pressure d p = (850-0) = 850 N/cm2
                      Let, at the surface specific volume is v 1 and at that depth specific volume is v 2
                                   
                       And,      
                                   =>
                                
                               Specific weight at that depth = 1/ specific volume
                             [Note: Specific volume is used instead of the actual volume in the above equation]
     Answer:            

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