Question

Not sure if this is the right place, buuuuut,
Is there anyone out there that's good with Atmospheric Sciences/Earth Sciences, I'm having a bit of trouble, and people rarely answer questions over in the earth science discussion :P
Thanks! ~

Answer 1

what's the question have to deal with?

Answer 2

It's multiple, and along the lines of understanding cold/warm fronts, as well as Density and air pressure etc.
Taking a Gen Ed in college, and since it's an online course all i get is the material spat out in front of me, as opposed to being explained. I'll toss a question up @Photon336

Answer 3

yeah, go ahead I'll see if I can help

Answer 4

For example,
The pressure of the gas in a parcel does not depend on the _______
a) parcel volume
b) none
c) gas temperature
d) gas density

I assume it is B, but i am unsure as to why. It can get pretty vague in some places. ^_^

Answer 5

well in general pressure is force per area

Answer 6

So since it's a packet of air, do we only measure for the weight of the atmosphere? Making the answer B? Or am i wrong :P

Answer 7

well, from chemistry pressure and temperature are directly related

Answer 8

Well, I think of it this way from the real gas equation but I guess we could use the ideal gas equation to explain the concepts.

\[pv = nRT \]

like, if you had a certain amount of gas, the pressure is going to depend on the temperature that gas is at.

same with volume, volume and pressure are inversely related.

Answer 9

Mm I see.

Answer 10

I figured the other few questions out along the way,
May i tag you if i find more that i dotn quite get?

Answer 11

yeah i'll be around later tonight

Answer 12

yeah so like if you look at pV = nRT this can help you understand this problem.

Answer 13

do you know why this is the case? @YoloShroom

Answer 14

Sorta-kinda,
I wouldnt mind if you explained it :D

Answer 15

so if we want to study how two variables relate we keep one constant

Answer 16

say if we wanted to study the relationship with pressure and volume what must be kept constant?

pV = nRT

remember n number of moles and R are usually constants.

Answer 17

so R, because in the ideal gas law R is the "Gas Constant." right?

Answer 18

yes R is constant and n is the number of moles of gas.

Answer 19

so okay it we want to study the relationship between pressure and volume temperature must be kept constant

Answer 20

Oh Rip, Ok. So in the case of the previous question, if we're keeping the Temperature volume constant, doesnt that leave only "none" or "gas density" as choices? Or am i getting ahead o myself

Answer 21

like the pressure depends on volume and temperature

Answer 22

\[p =\frac{ nR }{ V }T\] Where n/v = density

Answer 23

if we make n/V bigger then pressure increases too

Answer 24

Ah. I see what you're saying.
Makes more sense now.

Answer 25

so what if I wanted to study volume and temperature what must be kept constant?

Answer 26

So if we're studying volume and temperature, (V and T), we'd need to keep Pressure and #Of Moles constant? I think :P
Also, apperciate the previous explanation, figured out the answer to the next questions thanks to it!

Answer 27

yes that's true

Answer 28

what kind of relationship exists between pressure and volume?

Answer 29

and how do you know?

Answer 30

They have an inverse relationship? If pressure goes up, volume goes down, vice versa?

Answer 31

yeah that's right

Answer 32

how did you come to that conclusion?

Answer 33

Boyle's Law >.> <.<

Answer 34

yeah you could also just note from the formula

\[p_{1}v_{1} = p_{2}v_{2}\]

Answer 35

in order for the product of pv to be constant one variable must go down and the other must go up.