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Surface Tension

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check the correctness of the equation V= root P/Rho , where V is the velocity ,P is the pressure ,and RHO is the density of air.root only for presure p

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Water flows steadily through a horizontal pipe of a variable cross-section. If the pressure of water is p at a point where the velocity of flow is $υ$ , what is the pressure at another point where the velocity of flow is $2 υ; ρ$ being the density of water?

Q. Bernoulli's equation is given by

P + \frac{1}{2} ρ v^{2} + h ρ g = k,

P =

ρ

v =

h =

height of the liquid column,

g =

acceleration due to gravity and

k

is constant.
The dimensional formula for

k

is same as that of

Q. The time period of a body in

S H M

is represented by

T_{o} = P^{a} ρ^{b} S^{c}

P

ρ

S

is surface tension. The value of

a, b

c

respectively for the relation to be dimensionally correct is

Q. The density of a metal at normal pressure is

ρ

, Its density when it is subjected to an excess pressure

P

ρ

. If bulk modulus of metal is

2 P

\frac{ρ}{ρ}

Q. Bernoulli's equation is given by

P + \frac{1}{2} ρ v^{2} + h ρ g = k,

P =

ρ

v =

h =

height of the liquid column,

g =

acceleration due to gravity and

k

is constant.
The dimensional formula for

k

is same as that of

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