[Archive!] Pure mathematics, physics, chemistry, etc.: brain-training problems not related to trade in any way - page 25
You are missing trading opportunities:
- Free trading apps
- Over 8,000 signals for copying
- Economic news for exploring financial markets
Registration
Log in
You agree to website policy and terms of use
If you do not have an account, please register
Один в лодку, лодку в самолет, самолет на эскалатор, тут из-за угла Математ с пушкой без пороха и весами ...Не я всё на сегодняand, as always, it all ends up as a spherical horse in a vacuum :-))
Хорош про мух. Подобные задачи мне каждый день приходится решать по долгу службы (я про механику) :)
Вот задача.
Вдоль реки идут два человека. Возле берега стоит лодка. Как перебратся людям на противоположный берег, если в лодке может поместится один человек?
if people, it's not very clear. I remember it was an old joke about a man and a dog.
и как всегда кончится все это сферическим конем в вакууме :-))
Heh-heh-heh.)Алексей, а ты стоял когда-нибудь под работающим винтом вертолета. А позади винтового самолета с запущенными двигателями ?
Тонна мух в салоне самолета способна создать такой поток воздуха вниз, что там даже проф.Farnsworth не выдержит. :-0
Yuri, what if there was a blimp inside? A ton of little airships?
Well, we're talking about flies, not a helicopter. They'll be smaller.
I'm serious. A helicopter's a lot of pressure. I've flown in an MI-26, it's a hell of a thing. The weight of the plane with the helicopter will not change depending on the position of the helicopter. It's the same with flies.
Я серьёзно. Вертолёт "сильно давит". Мне приходилось на МИ-26 летать, офигеть штука. Вес самолёта с вертолётом не будет меняться в зависимости от положения вертолёта.
And which way are you and Yuri pushing the flies? :о)))
You'll invent UFOs like that. Have you forgotten Newton's laws?
Here is the 3rd law: http://www.edu.yar.ru/russian/projects/socnav/prep/phis001/dyn/dyn9.html
Вот задача.
Вдоль реки идут два человека. Возле берега стоит лодка. Как перебратся людям на противоположный берег, если в лодке может поместится один человек?
First one, then the other. Nowhere does it say that they follow the same bank.
Solving the "Fly Problem"
,
if solved in the context of dynamics. On the abscissa axis time
Yuri, we're talking about flies, not helicopters. They will be smaller, and the disturbance from their wings will go evenly in all directions. Especially since there's a ton of them. Statistics...
Alexei, tell me honestly that you are joking.
If not, explain what this new statistic is ? In all molecular laws where statistics are used, molecules are assumed to move chaotically. Flies too, that makes sense. Molecules fly by inertia, from impact to impact. In other words, during the flight, they don't interact with anything and don't press on anything. Therefore, their pressure on various walls is the same. Although they press differently on the floor and the ceiling. You do know that from this difference comes the Boltzmann distribution on one side and the weight of the air on the other.
And the flies (all of them!), wherever they fly, all the time interact with the air, all the time they press down on it, and all in the same direction - downwards. Where does "evenly so in all directions" come from? Where are the statistics here ?