hi, this is my question:

In a balloon it was noticed the the pressure, in atmospheres was inversely proportional to the square root of the height, in metres. When the balloon was at a height of 25m, the pressure was 1.44atm.

would K= 7.2?

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- Jan 26th 2010, 10:30 AMandyboy179proportionalities
hi, this is my question:

In a balloon it was noticed the the pressure, in atmospheres was inversely proportional to the square root of the height, in metres. When the balloon was at a height of 25m, the pressure was 1.44atm.

would K= 7.2? - Jan 26th 2010, 11:04 AMe^(i*pi)
- Jan 26th 2010, 11:05 AMandyboy179
thanks do u know what k would be in this:

the amount of waste which a firm produces, measured in tonnes per hour, is inversely proportional to the square root of the size of the filter beds, measured in metres squared. At the moment, the firm produces 1.25 tonnes per hour of waste, with filter beds of size 0.16 metres squared. - Jan 26th 2010, 11:12 AMandyboy179
would K= 0.0128???

- Jan 26th 2010, 11:14 AMe^(i*pi)
The rates don't matter so treat them as if they were x and y. (technically only true for steady state but that's far too advanced for a simple proportion problem). The units only matter if you want to know the units of k.

The equation is $\displaystyle n = \frac{k}{\sqrt{A}}$

I get an answer of $\displaystyle k=\frac{1}{2}$ - Jan 26th 2010, 11:18 AMandyboy179
i don't understand it!!!

what is n, is it 1.25? - Jan 26th 2010, 11:20 AMe^(i*pi)
- Jan 26th 2010, 11:22 AMandyboy179
ok, what is root with the a in it? is it 0.16? if so would square root of 0.16 be 0.4?

- Jan 26th 2010, 11:24 AMe^(i*pi)
- Jan 26th 2010, 11:36 AMandyboy179
also do you know what root5( 2+ root10)=?

- Jan 26th 2010, 11:38 AMandyboy179
would i beAttachment 15011

- Jan 26th 2010, 11:43 AMe^(i*pi)
Yes it would but didn't you ask that question before? Also if you have a new (especially unrelated) question it'd be best to make a new thread