Saved Bookmarks
| 1. |
One thousand small water droplets of equal size combine to form a big drop. Find the ratio of the final surface energy to the initial surface energy of water droplets. |
|
Answer» Solution :`4/3 PI R^2 = 1000 XX 4/3 pi r^3` `therefore R^3 = 1000r^3` ` therefore` R = 10r` `E_1 = 1000T (4pir^2)` `E_2 = T xx 4pi (10r)^2` `therefore E_2/E = (100r^2)/(1000r^2)` = 1/10 |
|