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What is hydrostatics ?...

What is hydrostatics ?

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Knowledge Check

  • A cylinder is fill ed with a liquid of density p upto a height h. What is the hydrostatic pressure exerted by the liquid on the bottom of the cylinder, if the cylinder is kept in a lifi moving upwa rds with an acceleration a ?

    A
    `rhogh`
    B
    `rho(g+a)`
    C
    `rho(g-a)`
    D
    `(rhogh)/(a)`

  • The bulk modulus of copper is 1.4 xx 10^(11) Pa and the coefficient of linear expansion is 1.7 xx 10^(–5) (C^(@))^(–1) . What hydrostatic pressure is necessary to prevent a copper block from expanding when its temperature is increased from 20^(@)C" to "30^(@)C ?

    A
    `6.0xx10^(5) Pa`
    B
    `7.1xx10^(7) Pa`
    C
    `5.2xx10^(6) Pa`
    D
    40 atm

  • Statement(S). Fishes belonging to chondrichthyes have heterocercal caudal fin Reason(R). These fishes have an anir bladder that acts as hydrostatic organ

    A
    S is correct but R is wrong
    B
    S is wrong but R is correct
    C
    Both S and R are correct and R is correct explanation to S
    D
    Both S and R are correct and R is not correct explanation to S

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