Qualification > Math

Another question - HELP!

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NotAbod:

--- Quote from: $~SauD~$ on May 15, 2011, 11:32:38 am ---I do  = 1512m3/ .00687m3 x .14m/s = 157205/ (60 x 60 x24) = 18.195 :(

according to mark scheme they do:
 1512m3/6870cm3 = 0.220087 x 1000000 = 220087/ (60 x 60 x 24)

i don't know why they at beginning divide a m3 with cm <-- impossible
then don't know why they multiply with 1000000 -.-  
:-\

--- End quote ---
i will explain this part
they divided m3 by cm3, and he multiplied by 100^3 which is 1000000, to conver that m^3 to cm^3

NotAbod:
(1512*100^3) / 6870.
muliplied by 100^3 to convert m^3 to cm^3.

SauD~:

--- Quote from: AboD on May 15, 2011, 11:36:04 am ---(1512*100^3) / 6870.
muliplied by 100^3 to convert m^3 to cm^3.

--- End quote ---
where will speed go?
why not included? :-\

isn't the formula
"low of water(volume) = Cross sectional area x speed x time "

NotAbod:

--- Quote from: $~SauD~$ on May 15, 2011, 11:37:44 am ---where will speed go?
why not included? :-\

isn't the formula
"low of water(volume) = Cross sectional area x speed x time "


--- End quote ---
i just explained, why did they multiply by 1000000

5mins lemme solve it

SauD~:

--- Quote from: AboD on May 15, 2011, 11:38:52 am ---i just explained, why did they multiply by 1000000

5mins lemme solve it

--- End quote ---
Take your time,
If you have doubt search the formula over net ;)

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