With increase in temperature, the viscosity of
Streamline flow is more likely for liquids with
Is viscosity a vector?
Viscosity is a property of liquid it does not have any direction, hence it is a scalar quantity.
Is surface tension a vector?
No, surface tension is a scalar quantity.
Surface tension $=\frac{\text { Work done }}{\text { Surface area }}$, where work done and surface area both are scalar quantities.
Iceberg floats in water with part of it submerged. What is the fraction of the volume of iceberg submerged, if the density of ice is $\rho_i=0.917 \mathrm{~g} \mathrm{~cm}^{-3} ?$
Given, density of ice $\left(\rho_{\text {ice }}\right)=0.917 \mathrm{~g} / \mathrm{cm}^3$
Density of water $\left(\rho_w\right)=1 \mathrm{~g} / \mathrm{cm}^3$
Let $V$ be the total volume of the iceberg and $V^{\prime}$ of its volume be submerged in water.
In floating condition.
Weight of the iceberg = Weight of the water displaced by the submerged part by ice
$$V_{\rho_{\text {ice }}} g=V^{\prime} \rho_w g$$
or $$\frac{V^{\prime}}{V}=\frac{\rho_{c e}}{\rho_w}=\frac{0.917}{1}=0.917 \quad(\because \text { Weight }=m g=v \rho g)$$