Author Topic: same pressure? (Read 2369 times)

superkingkong · « **on:** April 08, 2007, 09:38:25 AM »

hi guys,

haha.. my silly question again...

this has kept me thinking all this while...

are they having the same pressure?

a diver is at the bottom of a big water tank 30m deep, but placed on 0m sea level, and a diver is at 30m below see level ...

any answers?

SeaDemon · « **Reply #1 on:** April 08, 2007, 06:26:36 PM »

Wah..I thought I'm jobless but you seem to have more time than I do ;D

superkingkong · « **Reply #2 on:** April 08, 2007, 10:23:54 PM »

When system is running smoothly, i'll be free ... kekekee ;D

Quero · « **Reply #3 on:** April 17, 2007, 06:23:23 PM »

No they are not the same pressure.

mephisto · « **Reply #4 on:** April 17, 2007, 09:34:32 PM »

Quote

hi guys,

haha.. my silly question again...

this has kept me thinking all this while...

are they having the same pressure?

a diver is at the bottom of a big water tank 30m deep, but placed on 0m sea level, and a diver is at 30m below see level ...

any answers?

wahhh..you are really home sick arent you?

ok...of the bat...not refering the books and lazy to think....different pressure in both thanks...the above sea level takes into account the the concept behind altitude diving..low atmospheric pressure....but in reality not much difference cause tank height is only 30 meters.

atmospheric pressure + ambient pressure= absolute pressure.......for the example above the ambient pressure is the same and but the atmospheric is not?

correct or not?.....either way...can someone show the math?.....i hate physics

GOD · « **Reply #5 on:** April 17, 2007, 09:57:56 PM »

Is the tank been filled with FRESH WATER? .... Fresh & Sea water are different density....different weight.

;D

najibest · « **Reply #6 on:** April 17, 2007, 10:12:44 PM »

nope the pressure is not the same.even though the tank is located at 0m sea level, the water in the big tank would exert pressure to the diver equal to rho x g x h (density x gravity x height of water column). a diver 30m below sea level however would have the same pressure exerted (if the water has the same density) + 14.7 psia atmospheric pressure

superkingkong · « **Reply #7 on:** April 18, 2007, 05:11:07 AM »

ok.. for ease of comparison, both also sea water

bigjoe74 · « **Reply #8 on:** May 01, 2007, 10:24:20 PM »

hehehehe...i agree with snafu ..
let the man speak...

Quote

Is the tank been filled with FRESH WATER? .... Fresh & Sea water are different density....different weight.

;D

superkingkong · « **Reply #9 on:** May 02, 2007, 05:37:31 AM »

he has yet to speak

... if both also sea water, how? :-?

jgshuwei · « **Reply #10 on:** May 04, 2007, 01:45:50 PM »

Same pressure. Pressure is fluid density x gravity x depth, when all three parameters are the same, therefore same pressure.

Note
1) Since both sea water, density remain the same.
2) In 30m apart, gravity doesn't vary.
3) The effective depth is the same, 30m.

wing0112 · « **Reply #11 on:** May 04, 2007, 02:02:55 PM »

actually ar... my opinion... is almost the same or slightly diff only... the only thing that if this tank is place above sea level.. like in genting.. then its not the same already.... but if its at 0m above sea level.. same thingy..... 1 2 know why.. try dive in swimming pool.. u still need to equalize and consumption of air is almost the same as well.. or if pool boring.. then try at Aquaria... ada shark, rays and turtle.... and ppl to see you.. with mouth open.... and u can scare off the kids as they might think ur some alien....

for further question... ask PADI.com. They will be more happy than to answer your questions.

jgshuwei · « **Reply #12 on:** May 04, 2007, 02:39:16 PM »

Quote

actually ar... my opinion... is almost the same or slightly diff only... the only thing that if this tank is place above sea level.. like in genting.. then its not the same already.... but if its at 0m above sea level.. same thingy..... 1 2 know why.. try dive in swimming pool.. u still need to equalize and consumption of air is almost the same as well.. or if pool boring.. then try at Aquaria... ada shark, rays and turtle.... and ppl to see you.. with mouth open.... and u can scare off the kids as they might think ur some alien....

for further question... ask PADI.com. They will be more happy than to answer your questions.

I've tried twice.

SeaDemon · « **Reply #13 on:** May 04, 2007, 02:43:35 PM »

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Quote
actually ar... my opinion... is almost the same or slightly diff only... the only thing that if this tank is place above sea level.. like in genting.. then its not the same already.... but if its at 0m above sea level.. same thingy..... 1 2 know why.. try dive in swimming pool.. u still need to equalize and consumption of air is almost the same as well.. or if pool boring.. then try at Aquaria... ada shark, rays and turtle.... and ppl to see you.. with mouth open.... and u can scare off the kids as they might think ur some alien....

for further question... ask PADI.com. They will be more happy than to answer your questions.

I've tried twice.

Wah..lots of money. Should try diving the sea once in a while. Cheaper. If you want to see sharks come close to you, let me or Sheik know. But what I like most about diving Aquaria is having the opportunity to interact with the lengluis.

jgshuwei · « **Reply #14 on:** May 04, 2007, 10:13:09 PM »

Quote

Quote
Quote
actually ar... my opinion... is almost the same or slightly diff only... the only thing that if this tank is place above sea level.. like in genting.. then its not the same already.... but if its at 0m above sea level.. same thingy..... 1 2 know why.. try dive in swimming pool.. u still need to equalize and consumption of air is almost the same as well.. or if pool boring.. then try at Aquaria... ada shark, rays and turtle.... and ppl to see you.. with mouth open.... and u can scare off the kids as they might think ur some alien....

for further question... ask PADI.com. They will be more happy than to answer your questions.

I've tried twice.

Wah..lots of money. Should try diving the sea once in a while. Cheaper. If you want to see sharks come close to you, let me or Sheik know. But what I like most about diving Aquaria is having the opportunity to interact with the lengluis.

I paid for the 1st dive. 2nd dive was free because I'm writing an article for a Hong Kong marine aquarist magazine about "Dive with Shark".

superkingkong · « **Reply #15 on:** May 05, 2007, 06:37:09 AM »

hmm.. more confused :-/ some says same and some says not the same...

superkingkong · « **Reply #16 on:** May 05, 2007, 06:41:42 AM »

Quote

Quote
Quote
actually ar... my opinion... is almost the same or slightly diff only... the only thing that if this tank is place above sea level.. like in genting.. then its not the same already.... but if its at 0m above sea level.. same thingy..... 1 2 know why.. try dive in swimming pool.. u still need to equalize and consumption of air is almost the same as well.. or if pool boring.. then try at Aquaria... ada shark, rays and turtle.... and ppl to see you.. with mouth open.... and u can scare off the kids as they might think ur some alien....

for further question... ask PADI.com. They will be more happy than to answer your questions.

I've tried twice.

Wah..lots of money. Should try diving the sea once in a while. Cheaper. If you want to see sharks come close to you, let me or Sheik know. But what I like most about diving Aquaria is having the opportunity to interact with the lengluis.

hmm.. what are the charges ah?

hey SD, interacting with lengluis? u mean those lengluis on the opposite side of the glass? or those workers there?

jgshuwei · « **Reply #17 on:** May 05, 2007, 06:52:30 AM »

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hmm.. more confused :-/ some says same and some says not the same...

you can check with any engineering student who studied fluid dynamics, this is a common question.

jgshuwei · « **Reply #18 on:** May 05, 2007, 07:03:46 AM »

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Quote
Quote
Quote
actually ar... my opinion... is almost the same or slightly diff only... the only thing that if this tank is place above sea level.. like in genting.. then its not the same already.... but if its at 0m above sea level.. same thingy..... 1 2 know why.. try dive in swimming pool.. u still need to equalize and consumption of air is almost the same as well.. or if pool boring.. then try at Aquaria... ada shark, rays and turtle.... and ppl to see you.. with mouth open.... and u can scare off the kids as they might think ur some alien....

for further question... ask PADI.com. They will be more happy than to answer your questions.

I've tried twice.

Wah..lots of money. Should try diving the sea once in a while. Cheaper. If you want to see sharks come close to you, let me or Sheik know. But what I like most about diving Aquaria is having the opportunity to interact with the lengluis.

hmm.. what are the charges ah?

hey SD, interacting with lengluis? u mean those lengluis on the opposite side of the glass? or those workers there?

RM400/dive for certified diver. U can bring your own gear or use theirs. Maybe you will think that's too expensive, I don't think so because the tank itself cost more than RM10M and maintenance cost is very high. One thing for sure, you will see sand tiger sharks down there. U don't have to go all the way to South Africa/GBR to see these sharks. Just ask yourself, when was the last time u touch a live shark?

U will get a cert[ch65292]t-shirt & DVD at the end of the dive.

What SD said is the mermaids there. Am I right?

wing0112 · « **Reply #19 on:** May 05, 2007, 09:49:00 AM »

hello my fren... u cant interact with the lengluis there lah... the mermaid and u wont clash lah.. during ur dives... 400 is worth it loh.. as shuwei said.. u can touch those sharks... and sometimes turtle too... if its feeding time... oh yeah dive 1 time down under there = u need to dive for how many years to see so many stuff..... although sea is more bigger and have more space.... and shuwei u dive twice there ar.... good lah u to support our own Msian aquaria......

superkingkong · « **Reply #20 on:** May 05, 2007, 10:25:44 AM »

wow... it's like a high class diving

but i wonder the 10mil is the exact price ;D

jgshuwei · « **Reply #21 on:** May 05, 2007, 11:17:58 AM »

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wow... it's like a high class diving

but i wonder the 10mil is the exact price ;D

That's my estimate as a building contractor. I've interview their curator, Paul Hamilton, he bought me to the visit their filtration system and the like, wow all $$$$$ leh. Especially I myself is a marine aquarist, i know those equipment cost how much. The "salt" itself cost RM 300k a month.

superkingkong · « **Reply #22 on:** May 05, 2007, 11:40:41 PM »

Quote

Quote
wow... it's like a high class diving

but i wonder the 10mil is the exact price ;D

That's my estimate as a building contractor. I've interview their curator, Paul Hamilton, he bought me to the visit their filtration system and the like, wow all $$$$$ leh. Especially I myself is a marine aquarist, i know those equipment cost how much. The "salt" itself cost RM 300k a month.

oh.. ic

no, my point is that an egg cost rm0.50 at the market, but it cost rm10 on MAS

,... if u know what i mean

jgshuwei · « **Reply #23 on:** May 05, 2007, 11:53:51 PM »

Quote

Quote
Quote
wow... it's like a high class diving

but i wonder the 10mil is the exact price ;D

That's my estimate as a building contractor. I've interview their curator, Paul Hamilton, he bought me to the visit their filtration system and the like, wow all $$$$$ leh. Especially I myself is a marine aquarist, i know those equipment cost how much. The "salt" itself cost RM 300k a month.

oh.. ic

no, my point is that an egg cost rm0.50 at the market, but it cost rm10 on MAS ,... if u know what i mean

Ok, got u.

superkingkong · « **Reply #24 on:** May 06, 2007, 12:00:33 AM »

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hello my fren... u cant interact with the lengluis there lah... the mermaid and u wont clash lah.. during ur dives... 400 is worth it loh.. as shuwei said.. u can touch those sharks... and sometimes turtle too... if its feeding time... oh yeah dive 1 time down under there = u need to dive for how many years to see so many stuff..... although sea is more bigger and have more space.... and shuwei u dive twice there ar.... good lah u to support our own Msian aquaria......

i know it's worth it... u can get to see all the fishes, what i'm trying to say is, the charges is on the high side.. and no or few publics would want to go there just to see fishes. a beach for relaxation/fun is more worth that kind of money. i guess it they can lower down the charges, more public would want to dive there, and thus, maybe they will have more business.

wondering.. if diving there... can i get my logbook signed

jgshuwei · « **Reply #25 on:** May 06, 2007, 12:15:40 AM »

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Quote
hello my fren... u cant interact with the lengluis there lah... the mermaid and u wont clash lah.. during ur dives... 400 is worth it loh.. as shuwei said.. u can touch those sharks... and sometimes turtle too... if its feeding time... oh yeah dive 1 time down under there = u need to dive for how many years to see so many stuff..... although sea is more bigger and have more space.... and shuwei u dive twice there ar.... good lah u to support our own Msian aquaria......

i know it's worth it... u can get to see all the fishes, what i'm trying to say is, the charges is on the high side.. and no or few publics would want to go there just to see fishes. a beach for relaxation/fun is more worth that kind of money. i guess it they can lower down the charges, more public would want to dive there, and thus, maybe they will have more business.

wondering.. if diving there... can i get my logbook signed

No, the max depth is 4m. Well, mayb I've talked too much on behalf of them, why don't you contact them and ask about this? Hopefully u can work out special deal with them and ppl over here can enjoy it?

jgshuwei · « **Reply #26 on:** May 06, 2007, 12:18:28 AM »

if you can read chinese, try this.

http://chinese.cari.com.my/myforum/viewthread.php?tid=814156&extra=page%3D7

superkingkong · « **Reply #27 on:** May 06, 2007, 01:15:54 AM »

kekekee.. i know how to read the first 2 letters... KLCC Aquaria

sorry if i've made u talk too much. sorry to have ask u too much. really sorry.

anyway, thanks very much for the nice piece of info. i haven't even been to that aquaria.. kekekee and not really aware of it :

will pay a visit there one day

GOD · « **Reply #28 on:** May 06, 2007, 01:47:49 AM »

Back to the QUESTION ..... Same Pressure, as both are sea water.

;D

superkingkong · « **Reply #29 on:** May 06, 2007, 02:01:16 AM »

thanks guys ;Dfor clearing up my doubt

Author Topic: same pressure? (Read 2369 times)

superkingkong

SeaDemon

superkingkong

Quero

mephisto

GOD

najibest

superkingkong

bigjoe74

superkingkong

jgshuwei

wing0112

jgshuwei

SeaDemon

jgshuwei

superkingkong

superkingkong

jgshuwei

jgshuwei

wing0112

superkingkong

jgshuwei

superkingkong

jgshuwei

superkingkong

jgshuwei

jgshuwei

superkingkong

GOD

superkingkong