there are two more questions which i dint get.....the questions are as follows:-1]the pressure of liquid column depends on its height h, the density p[itsthe symbol of density],acceleration due to gravity g,show that p=h [symbol of density]p g by dimensional method.(give constant k=1)2]express a pressure of 50 N/metre square in terms of dyne/cm square.urgently needed for the test tht is conductedtomorrow...............

Hi

Take, P= k x h^a x Þ^b x g^c .

dimensions of P are kg/ms² . Write the dimensions of h, g & Þ .

h=m , g=m/s² , Þ= kg/m³

Equate the power of each i.e of m, kg and sec on the left hand side to rt hand side. U ll get three equations, solve them for three variables. U ll get the final answer as a=b=c=1 .

therefore P=hÞg as k=1

Ans 2:

1 Newton=  10⁵dynes and 1 m = 100cm , therefore 1m² = 10⁴cm² .

therefore 50N/m sq = 50 x 10⁵ / 10⁴ dynes /cm sq, hence answer is 500.

u can use..........M1/M2=1000  L1/L2=100 T1/T2=1

n1ui=n2u2..........take the dymensional formula of newton/metresquare...