Will plastic disintegrate if buried ungerground [like around 7 or 8 feet] for say 10 years?
821765
Plastic, in general, would not disintegrate. Some plastics are made to break up. It would depend on what it was made from. If it was organic it would evetually. If it was a petroleum product, it would not.\nCorrugated cardboard boxes are made from paper (wood fibers),  so they would disintegrate. The speed would depend on factors such as amount of water in the soil and insects.
36346
http://www.cdphe.state.co.us/op/regs/hazwaste/10073268partblanddisposalrestrictions.pdf\nYou must comply with LDRs prior to placing soil that exhibits a characteristic of hazardous waste, or exhibited a characteristic of hazardous waste at the time it was generated, into a land disposal unit.\n\nHere are the EPA LDRs\nhttp://www.epa.gov/fedrgstr/EPA-WASTE/1998/May/Day-26/f98121.htm
301204
Its hard to say, unless one knows what acids or acid vapors will be in contact with the plastic.\n\nThe biggest issue once acid compatibility is taken care of, is  going to be easy of cleaning. Contaminiation will build up, and surface conductivity can take a severe header, unless the surface can be kept clean.\n\nTeflon is fairly inert, but is somewhat of a pain to work with and spendy. Delrin (acetal) is easy to machine, but somewhat tricky to get a decent surface finish on. HDPE is cheap, but with the wrong acids can be problemtic.
802571
wow...in 1968 i watched what appeared to be a shiny metallic piece of  crumpled metal tumble towards earth for 10 minutes, it was probably space debris or toilet ejecta from a passing airliner.what you seen was likely hardboard insulation like they use on construction sites, that stuff will fly a long ways with little wind....or else it was a runaway magic carpet
317397
no doubt, disposal of nuclear under the sea in not the safer solution. lead blocks can not be stable for years together . if possible it will never withstand for 1000 years . so there will be dangerous radiations raniating which will affect aquatic organisms & later pollute the atmosphere
1142738
It recently finished disarming. It will probably dissolve as there is no need for it now. Nearly 100 years of war got it nowhere. I'm not sorry to see it go.
982763
Polymers from some plastics can supposedly leach.\nThis happens e.g. if you microwave something without removing the saran wrap.\n\nIn general the environmental hazard with plastics and polystyrene is not that they're toxic, but that they will last for thousands of years. It's unfortunately more economical to make them disposable than to recycle. If oil hit $200 a barrel or there were higher pollution fines /landfill fees this would change.
1086610
You'll probably be fine, but keep a trash can around just in case. :-D
1121163
Well take a look at what's still left of ancient cultures. It all depends on the building materials. I think 20,000-50,000 years would be enough time for things to be knocked down and destroyed but it's all really in how the structure is preserved.
488788
Tie a string to it ,at other end add a brick to it,leave it hanging for about 3 years
787309
There is some research in this area.  There apparently are two types of decomposition.  Most references I see list 400-500C, but the research reference gives two temp ranges.
552213
I have dug many graves and a lot of it depends on whether there is a vault over the casket, ground water, soil types, and embalming fluids.It takes quite a while, because on the surface there are scavengers, but underground there aren`t but bacteria.I have relocated bodies and six or eight years after the burial they are still recognizable as human with a white mold covering them. I would say that a body buried with no vault might last quite a while before becoming a skeleton.
4451
There is a very specific answer to this question at the link below.  Just so you know, it will take about 5-7 years.
580111
the density or any other property of an object sinking in water does not immediately change.  at some point the ball might rust, but that's another argument.\n\nthe force acting on the ball as it sinks will grow exponentially with respect to depth, but the ball itself will be no different at the bottom of Marianna's Trench or the bottom of a drinking glass.\n\nPS, the earth's crust is no more than 30 miles thick in the thickest places, with about 7 miles in the deepest place in the ocean, so you cannot have a hundred miles of depth in any ocean.  good idea though!
276560
This is sedimentation. It isn't foundations sinking, although that can happen. It's weathering products. Soil production is one way that things can become buried, as pointed out in the first answer, but for the most part, it is windblown, mass-movement, or water deposition that puts things that were initially on the surface underground.\n\nIt is important to note that there are regions of net deposition and those of net erosion, so not everything will always become buried. Sometimes it is subject to weathering itself. Large stone amphitheaters will fall apart and the pieces will be subject to weathering with will make them look like shapeless boulders. The only other way to get large boulders anywhere is by downhill mass movement, glacial transport, flash floods or by people putting them there.
26003
Absolutely.  \n\nHow long depends on what you consider destroyed.   Chances are we'll be long gone before the planet is left abandoned by our own dieing sun which is about 1/2 way through it's life cycle.  From the linked Wikipedia artical, it claims that the earth won't be engulfed and vaporized by the sun, but it won't be a good thing one way or the other.\n\nWhat happens after we have no sun is tough to say, but you could probably argue that at that point if not long before the earth would be unable to support life.
633158
The chips are usually soldered in place on a printed circuit board, and the odds that you could desolder them without grounding or shorting any pins are small indeed. That makes the answer to this question almost positively no, the data will not remain.