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Find the dimensional formulae of followi...

Find the dimensional formulae of following quantities:
(a) The surface tension S,
(b) The thermal conductivity k and
(c) The coefficient of viscosity `eta`.
Some equation involving these quantities are `S=(rho g r h)/(2) " " Q=k(A(theta_(2)-theta_(1))t)/(d) and " " F=-etaA(v_(2)-v_(1))/(x_(2)-x_(1)) `,
where the symbols have their usual meanings. (`rho`-density, g- acceleration due to gravity , r-radius,h-height, A-area, `theta_(1)&theta_(2)`- temperatures, t-time, d-thickness, `v_(1)&v_(2)` -velocities, `x_(1)& x_(2)` - positions.)

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