142760 The ratio of the pressure $(P)$ on a swimmer 10 $m$ below the water surface of a lake to that of the pressure on the surface of water $\left(P_{a}\right)$ (Atmospheric pressure $=1 \times 10^{5} \mathrm{~Pa}, \rho=1000$ $\mathrm{kg} \mathrm{m}^{-3} \mathrm{~g}=10 \mathrm{~m} / \mathrm{s}^{2}$ ) is

142761 A metal cube of side $10 \mathrm{~cm}$ rests on a film of a liquid of thickness $0.2 \mathrm{~mm}$. If upon applying a horizontal force $\overrightarrow{\mathbf{F}}$ of magnitude $0.1 \mathrm{~N}$ the cube slides with a constant speed of $0.08 \mathrm{~m} / \mathrm{s}$, then the coefficient of viscosity is

142762 1 ton stone is put on a larger piston of diameter $40 \mathrm{~cm}$ of a hydraulic lift and a pressure $P$ has to be applied on the smaller piston of dimeter 2 cm to lift the stone. The pressure $P$, is approximately.

142763 A wide vessel with a small hole at the bottom is filled with water and kerosene. Neglecting the viscosity the velocity of water flow, if the thickness of water layer is $30 \mathrm{~cm}$ and the thickness of kerosene layer is $20 \mathrm{~cm}$. is

142760 The ratio of the pressure $(P)$ on a swimmer 10 $m$ below the water surface of a lake to that of the pressure on the surface of water $\left(P_{a}\right)$ (Atmospheric pressure $=1 \times 10^{5} \mathrm{~Pa}, \rho=1000$ $\mathrm{kg} \mathrm{m}^{-3} \mathrm{~g}=10 \mathrm{~m} / \mathrm{s}^{2}$ ) is

142761 A metal cube of side $10 \mathrm{~cm}$ rests on a film of a liquid of thickness $0.2 \mathrm{~mm}$. If upon applying a horizontal force $\overrightarrow{\mathbf{F}}$ of magnitude $0.1 \mathrm{~N}$ the cube slides with a constant speed of $0.08 \mathrm{~m} / \mathrm{s}$, then the coefficient of viscosity is

142762 1 ton stone is put on a larger piston of diameter $40 \mathrm{~cm}$ of a hydraulic lift and a pressure $P$ has to be applied on the smaller piston of dimeter 2 cm to lift the stone. The pressure $P$, is approximately.

142763 A wide vessel with a small hole at the bottom is filled with water and kerosene. Neglecting the viscosity the velocity of water flow, if the thickness of water layer is $30 \mathrm{~cm}$ and the thickness of kerosene layer is $20 \mathrm{~cm}$. is

142760 The ratio of the pressure $(P)$ on a swimmer 10 $m$ below the water surface of a lake to that of the pressure on the surface of water $\left(P_{a}\right)$ (Atmospheric pressure $=1 \times 10^{5} \mathrm{~Pa}, \rho=1000$ $\mathrm{kg} \mathrm{m}^{-3} \mathrm{~g}=10 \mathrm{~m} / \mathrm{s}^{2}$ ) is

142761 A metal cube of side $10 \mathrm{~cm}$ rests on a film of a liquid of thickness $0.2 \mathrm{~mm}$. If upon applying a horizontal force $\overrightarrow{\mathbf{F}}$ of magnitude $0.1 \mathrm{~N}$ the cube slides with a constant speed of $0.08 \mathrm{~m} / \mathrm{s}$, then the coefficient of viscosity is

142762 1 ton stone is put on a larger piston of diameter $40 \mathrm{~cm}$ of a hydraulic lift and a pressure $P$ has to be applied on the smaller piston of dimeter 2 cm to lift the stone. The pressure $P$, is approximately.

142763 A wide vessel with a small hole at the bottom is filled with water and kerosene. Neglecting the viscosity the velocity of water flow, if the thickness of water layer is $30 \mathrm{~cm}$ and the thickness of kerosene layer is $20 \mathrm{~cm}$. is

142760 The ratio of the pressure $(P)$ on a swimmer 10 $m$ below the water surface of a lake to that of the pressure on the surface of water $\left(P_{a}\right)$ (Atmospheric pressure $=1 \times 10^{5} \mathrm{~Pa}, \rho=1000$ $\mathrm{kg} \mathrm{m}^{-3} \mathrm{~g}=10 \mathrm{~m} / \mathrm{s}^{2}$ ) is

142761 A metal cube of side $10 \mathrm{~cm}$ rests on a film of a liquid of thickness $0.2 \mathrm{~mm}$. If upon applying a horizontal force $\overrightarrow{\mathbf{F}}$ of magnitude $0.1 \mathrm{~N}$ the cube slides with a constant speed of $0.08 \mathrm{~m} / \mathrm{s}$, then the coefficient of viscosity is

142762 1 ton stone is put on a larger piston of diameter $40 \mathrm{~cm}$ of a hydraulic lift and a pressure $P$ has to be applied on the smaller piston of dimeter 2 cm to lift the stone. The pressure $P$, is approximately.

142763 A wide vessel with a small hole at the bottom is filled with water and kerosene. Neglecting the viscosity the velocity of water flow, if the thickness of water layer is $30 \mathrm{~cm}$ and the thickness of kerosene layer is $20 \mathrm{~cm}$. is