Whenever you're listening to a song from a certain album, the atmosphere the album cover gives off to you, is that the same atmosphere the *song* gives off to you?MQ: Favorite song about rain?
It's like when a rocket moves, what makes the rocket to go forward? the stream of mass exploding from it's behind pushes it forward. The law of conservation of linear momentum states that the total momentum of a closed system of objects (which has no interactions with external agents) is constant. So if the fuel is emitted out of an spaceship the spaceship gains momentum in the opposite direction. It's the same thing with the fireman, just instead of spaceship it's a hose and instead of fuel it's water! :D Have a nice day ;)
You can get very realistic materials used for making scale doll houses (usually 1:12) and for making model railroad layouts in several different scales, but especially HO (1:87) and O (1:48) Otherwise, tag board (about the weight of file folders), poster board (about 1/16 like for sheet rock), balsa sheet and shapes (lots) and basswood (harder than balsa.)
