Правка раздела «Answer»
en/4.5.19.md
+1 −1
| ### Statement | |||
| $4.5.19.$ The outer radius of a soap bubble is R, the thickness of its wall is h. Find the air pressure inside the bubble. The air pressure outside the bubble is P0, the surface tension of water is σ. | |||
| ### Solution | |||
|  | |||
| @@ -10,4 +10,4 @@Solution | |||
| #### Answer | |||
| − | P = | ||
| + | P = P0+2σ(1/R+1/(R-h)) | ||
| ### Statement | ### Statement | ||
| $4.5.19.$ The outer radius of a soap bubble is R, the thickness of its wall is h. Find the air pressure inside the bubble. The air pressure outside the bubble is P0, the surface tension of water is σ. | $4.5.19.$ The outer radius of a soap bubble is R, the thickness of its wall is h. Find the air pressure inside the bubble. The air pressure outside the bubble is P0, the surface tension of water is σ. | ||
| ### Solution | ### Solution | ||
|  |  | ||
| @@ -10,4 +10,4 @@Solution | |||
| #### Answer | #### Answer | ||
| P = |
P = P0+2σ(1/R+1/(R-h)) | ||