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Khalid
Help lifting a 35 kg square metal sheet with gas ?
If I was to lift a metal sheet ( 100x100x10 cm) with items on top of it off the ground with a total weight of 35 kgs using helium OR hydrogen balloons
feel free to correct the drawings if its wrong, I need to install a couple of fans with the balloons to lift and control the metal sheet
Pic 1 :
Pic 2: this shows the lift points, I'm not completely sure if the square shape is better than the circular though.
1 AnswerEngineering9 years agoWhich gas has the greatest lift ?
Hot air is good but the lift is very small, and requires to be heated constantly.
I need something like Helium which has a greater lift, but is heated Helium better ? if yes, how much more lift are we talking about ?
And is there a better gas with higher lift ( must be available and inflammable )
Thank you in advance.
3 AnswersChemistry9 years agowhich is better in hot air balloons Helium or Hot air ?
Why do Hot air balloons use burners to heat the air inside the balloon instead of filling the balloons with helium ? helium has a greater lift and does not need to be heated so often.
3 AnswersChemistry9 years agoWhere can I ask serious and challenging Engineering questions ? ( project in progress)?
I thought about asking it here but there are many questions go unanswered so, I dunno.
I just need a website or a forum where I get some answers.
Thank you in advance.
1 AnswerEngineering9 years agois it possible to MOD GTA IV v1.0.3 ? if not ..?
I bought the game recently on PC because I wanted to play the game again with mods ( modding on PS3 & xbox isnt as easy ) .. but from what I read you can only mod GTA IV 1.0.2
but even when I do a fresh install its downloaded as 1.0.3 ! .. which * from what i read not moddable ..
is there a version I can update to and make it moddable ? .. or a way to downgrade the game ?
will downloadinf the 1.0.2 patch downgrade it ?..
PS: already used SparkIV and nothing happens
2 AnswersPC10 years agois my motherboard DDR3 RAM compatible ?
Motherboard Name: Intel Raisin City DG41RQ
(2 PCI, 1 PCI-E x16, 2 DDR2 DIMM, Audio, Video, Gigabit LAN)
Motherboard Chipset:Intel Eaglelake G41
crappy motherboard I know m will be upgraded next month , just wanna check because ? the RAM isn't compatible ill just wait till i get a new one
2 AnswersAdd-ons1 decade agoHeart problem ? should I be worried ?
This has been happening for almost 4 years now ..it doesn't happen very often ( once every 2 months ) but it does hurt & it comes at the worst times ever !
Sometimes, when I take a deep breathe I feel an unbearable pain in the left part of my chest ( I can tell its not a muscle, its the heart)
its feels like someone just took a knife & stabbed me with it (except the pain is from the inside ) .. & it only lasts for 2~4 seconds
I'm 22 & I play all kind of sports .. & I eat healthy ,not always tho
Thanks :)
& sorry for the horrible english xD
3 AnswersHeart Diseases1 decade agoNeed help picking a Graphics card ?
can anyone give me a website where I can compare cards ? .. I only have ( hwcompare.com) which only has the popular G Force and ATI cards .. ( is the cards with the same chip set really different than the cards itself ? )
Sapphire HD6850 1GB DDR5
XFX GTX 460 675M 1GB DDR5
Gigabyte Radeon HD 5830 1GB
MSI n460gtx oc cyclone
I just need a good card for around $250
Thanks
5 AnswersAdd-ons1 decade agoWhat are ASUS graphics cards ?! & what does the whole 675M..940M..etc mean ?
I went to get a new graphics card and I noticed that they have tons of the same card with different names and covers ..
like the GTX 460 1 GB ..
there is the ASUS
Asus ENGTX460
Chipset - NVIDIA GeForce GTX 460
Interface - PCI Express 2.0
Memory (MB) - 1024 DDR5
and the G Force
XFX GTX 460 675M
Chipset - NVIDIA GeForce GTX 460
Interface - PCI Express
Memory (MB) - 1024 DDR5
the ASUS is more expensive and has a ONE year warranty instead of 2 ..
1 AnswerAdd-ons1 decade agoUpgrading my PC part by part .. Graphics Card & maybe a CPU or RAM first ? (gaming PC but not hardcore )?
since my graphics card started smoking for no reason a couple of days ago & no longer among the living ..
I decided to buy --G Force GTX 460-- .. OR .. the --G Force GTX 560 Ti-- ( ATI cards are not an option )
however if you know a better graphics card for around 200~250$ .. please recommend
now I have
CPU : Core to Quad
Motherboard : Intel ( 2 RAM slots )
RAM : 4 GB ( -1 for win 7) (2 GB in each slot )
Should I get a CPU i5 ? .. or should I buy a 4 GB RAM to increase the memory ?
Thanks a lot :)
1 AnswerOther - Hardware1 decade agoWhy do the external hard disks have 2 USB plugs ?
is it for power ? some hard disks need a bit more power right ?
& does it effect the speed?
2 AnswersAdd-ons1 decade agoWhen can I use Nitro Tech protein ?!?
Im 22 , I used to go to the gym like a year ago , then stopped because i had a small surgery
however , 6 months after the surgery , i started working out again but NOT in a gym , just jogging & some push ups & set ups.
My body isnt as it used to be, & I only have 2 months before I start working again.
Is Nitro Tech as good as everyone say ?!
& is there is any side effect ? because i heard there will be side effects if i dont work out for a couple of months before i start taking it.
thanks
1 AnswerDiet & Fitness1 decade agoWays of taking care of a Mint plant?
I want to plant some Mint & I need the basic tips or ways of taking care of it
like how can I make it spread ? should I cut off the small flowers whatever its called
how often should I water it ?
thnx alot :)
5 AnswersGarden & Landscape1 decade agoWhen will season 4 of The Big Bang Theory start ?!?
2 AnswersComedy1 decade agoGTA: San Andreas graphics problem =/?
I just felt like playing the game since its a lot bigger/much more fun than the new one , problem is with the graphics , its horrible ! even if all the parameters are at the highest.
take a look :
http://img692.imageshack.us/slideshow/webplayer.ph...
I tried everything , from reinstalling , to updating my video card ,nothing works ,,
I'm running Windows 7
GeForce 9500GT
4 GB RAM
Intel C2Q 2.66
2 AnswersVideo & Online Games1 decade agoHelp Air conditioning a 6x4 room .?
I have a 6x4 room , yes not the prettiest room in the world , & since its summer & its hot as hell ..
I bought a portable AC which is suppose to do the job , that's what they told me at least
West point WPK09 Air Conditioner
why is the room not getting any colder ?! , is it the because I had to closed the window with a piece of wood , there is this pipe that exhausts hot air & I had to do to come up with something .
I honestly feel super stupid asking that question cuz i cant imagine what wny of u would say but its worth a shot ..
thanks
3 AnswersDo It Yourself (DIY)1 decade agoDo the home-made 3D glasses really work ?
4 AnswersMovies1 decade agoHelp with 3D glasses, PLEASE !?
graphics card : GeForce 9500
screen : SAMSUNG SyncMaster 2043
Everything works perfectly fine except for the 3D thing , my 3D glasses are not the white ones with the Red/Blue its this black glasses with almost transparent lenses ..
now the problem is , I did try those glasses in Toy Story 3 3D in the cinema & they worked perfectly ..
two days later I bought the DVD & wanted to watch it on my computer but the problem is when I look through the lenses, the right one becomes so dark-blue & the left one nothing happens.
If I try to look through wearing the glasses backwards ,again the right one (which is suppose to be the left-red-) becomes dark-blue.
how can I fix this problem ? thanks
3 AnswersMovies1 decade agoLAN problem , no one sees my computer?
I'm posting it again because something changed
anyway we have a huge university network around here , when I open Network Scanner (v4.4.7) on my desktop & I click scan
it shows all the computers on the network including mine ,
however when I scan using my laptop ( or my friends computers) I see all the other computers except for my desktop !
its driving me crazy.
all the IP's are 100% correct , network discovery is on , firewall isnt the problem nor the anti-virus ,everything seems ok !
2 AnswersComputer Networking1 decade ago