143058 The air pressure inside a soap bubble of radius $R$ exceeds the outside air pressure by $10 \mathrm{~Pa}$. By how much will the pressure inside a bubble of radius $2 \mathrm{R}$ exceed the outside air pressure?

143059 64 identical water droplets combine to form a large drop. Find the ratio of the total surface energy of 64 droplets to that of the large drop

143060 When a large bubble rises from bottom of a water lake to its surface, then its radius doubles. If the atmospheric pressure is equal to the pressure of height ' $\mathrm{H}$ ' of a certain water column, then the depth of lake will be

143061 A drop of some liquid of volume $0.04 \mathrm{~cm}^{3}$ is placed on the surface of a glass slide. Then another glass slide is placed on it in such a way that the liquid forms a thin layer of area $20 \mathrm{~cm}^{2}$ between the surfaces of the two slides. To separate the slides a force of $16 \times 10^{5}$ dyne has to be applied normal to the surfaces. The surface tension of the liquid is (in dyne-cm ${ }^{-1}$ )

143058 The air pressure inside a soap bubble of radius $R$ exceeds the outside air pressure by $10 \mathrm{~Pa}$. By how much will the pressure inside a bubble of radius $2 \mathrm{R}$ exceed the outside air pressure?

143059 64 identical water droplets combine to form a large drop. Find the ratio of the total surface energy of 64 droplets to that of the large drop

143060 When a large bubble rises from bottom of a water lake to its surface, then its radius doubles. If the atmospheric pressure is equal to the pressure of height ' $\mathrm{H}$ ' of a certain water column, then the depth of lake will be

143061 A drop of some liquid of volume $0.04 \mathrm{~cm}^{3}$ is placed on the surface of a glass slide. Then another glass slide is placed on it in such a way that the liquid forms a thin layer of area $20 \mathrm{~cm}^{2}$ between the surfaces of the two slides. To separate the slides a force of $16 \times 10^{5}$ dyne has to be applied normal to the surfaces. The surface tension of the liquid is (in dyne-cm ${ }^{-1}$ )

143058 The air pressure inside a soap bubble of radius $R$ exceeds the outside air pressure by $10 \mathrm{~Pa}$. By how much will the pressure inside a bubble of radius $2 \mathrm{R}$ exceed the outside air pressure?

143059 64 identical water droplets combine to form a large drop. Find the ratio of the total surface energy of 64 droplets to that of the large drop

143060 When a large bubble rises from bottom of a water lake to its surface, then its radius doubles. If the atmospheric pressure is equal to the pressure of height ' $\mathrm{H}$ ' of a certain water column, then the depth of lake will be

143061 A drop of some liquid of volume $0.04 \mathrm{~cm}^{3}$ is placed on the surface of a glass slide. Then another glass slide is placed on it in such a way that the liquid forms a thin layer of area $20 \mathrm{~cm}^{2}$ between the surfaces of the two slides. To separate the slides a force of $16 \times 10^{5}$ dyne has to be applied normal to the surfaces. The surface tension of the liquid is (in dyne-cm ${ }^{-1}$ )

143058 The air pressure inside a soap bubble of radius $R$ exceeds the outside air pressure by $10 \mathrm{~Pa}$. By how much will the pressure inside a bubble of radius $2 \mathrm{R}$ exceed the outside air pressure?

143059 64 identical water droplets combine to form a large drop. Find the ratio of the total surface energy of 64 droplets to that of the large drop

143060 When a large bubble rises from bottom of a water lake to its surface, then its radius doubles. If the atmospheric pressure is equal to the pressure of height ' $\mathrm{H}$ ' of a certain water column, then the depth of lake will be

143061 A drop of some liquid of volume $0.04 \mathrm{~cm}^{3}$ is placed on the surface of a glass slide. Then another glass slide is placed on it in such a way that the liquid forms a thin layer of area $20 \mathrm{~cm}^{2}$ between the surfaces of the two slides. To separate the slides a force of $16 \times 10^{5}$ dyne has to be applied normal to the surfaces. The surface tension of the liquid is (in dyne-cm ${ }^{-1}$ )