3 ms·
. pipe | | | | |---|-|---water level --| | |_| pipe end below | |_______________________| When the pipe is below the water
by nashashmi 2y ago
. pipe
| | | |
|---|-|---water level --|
| |_| pipe end below |
|_______________________|
When the pipe is below the water level, air can't travel up the pipe.