/sci/ - Science & Math

[Anonymous No.996969]

A two litre sealed container is filled with air at atmospheric pressure. It is connected to a vacuum pump which can pump air at a flow rate that is proportional to the difference in pressure within the container to the pressure outside. This tells us that the pressure drops exponentially with time. If it takes 20 seconds for the pressure in the container to halve, how long would it take to reduce the pressure in a five litre container from atmospheric pressure to 1/8 th of atmospheric pressure

[Anonymous No.996979]

...the fuck?

[Anonymous No.996991]

No homework threads.

Fuck the fuck off.

[Anonymous No.997018]

>>996969
sorry
anon cannot physics

[Anonymous No.997021]

The first train reaches Chicago at 8:24pm and the second train reaches New York at 8:25

[Anonymous No.997084]

>>997021
oh you

[Anonymous No.997138]

the answer is about i*c/the number of people currently in chinese toilets

[Anonymous No.997185]

exactly 59.3 seconds

[Anonymous No.997246]

it takes 20 seconds to get to 1/2
so it must take another 20 seconds to get to 1/4
then another 20 seconds to get to 1/8
So, in a two litre container, it takes 60 seconds to get to 1/8
Therefore, in a 5 litre container, which is 2 and a half times bigger, it takes 2 and a half times more time to pump that shit out
so it takes 150 seconds
Physics Olympiad ftw

[Anonymous No.998241]

>>997246
I think, if anything, it would take less time per succession. it would be 20 seconds to get to 1/2 atmos. pressure then the rate increases as the difference in pressure increases. Getting to 1/4 would take less than half what it took to get to 1/2 and getting to 1/8 would be even less than that. I would say maybe 35 seconds to do a 2 liter container.