Saved Bookmarks
| 1. |
Explain why, we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert. |
|
Answer» There will be a weak force of attraction between the particles in air. So we can move our hands on air whereas the particles in solid plank are closely packed and a strong force of attraction exists between them. Hence it needs a huge force to overcome the attraction which a karate expert can do. |
|