FAQ
I was thinking about getting a full metal M4 because I wanted to practice more realism and MilSim. Most people tell me to receive a polymer plastic gun because it is light weight, but not metal. The guns I was looking at that are every metal include:
-JG M4 S-System 2010
-AGM 614 Full Metal Crane Stock
I want the guns to have exceeding accuracy, but I am not sure if the JG will shoot too difficult. I will mostly be playing in a field, where I will be shooting from away at 100 ft to 140 ft. So which one of these guns should I receive and explain why, plus, should I receive a full metal body (remember that I want a gun that is more for MilSim and Accurate)?
9 May 2010, 9:47 pm | click here to read more
I was thinking about getting a full metal M4 because I wanted to practice more realism and MilSim. Most people tell me to receive a polymer plastic gun because it is light weight, but not metal. The guns I was looking at that are every metal include:
-JG M4 S-System 2010
-AGM 614 Full Metal Crane Stock
I want the guns to have exceeding accuracy, but I am not sure if the JG will shoot too difficult. I will mostly be playing in a field, where I will be shooting from away at 100 ft to 140 ft. So which one of these guns should I receive and explain why, plus, should I receive a full metal body (remember that I want a gun that is more for MilSim and Accurate)?
9 May 2010, 11:33 pm | click here to read more
Plastics such as polypropylene become transparent when stretched in two perpendicular directions using a machine. Yet, when I stretch the resulting BOPP (biaxially-oriented polypropylene), it becomes milky white. I'm curious why this is so, and I'd really appreciate anyone who can tell me why.
9 Jul 2010, 3:16 am | click here to read more
This question is for my science coursework.
"This is the statement and some of the things I need to include:
Some plastic bags are stronger than others. You need to use the terms, polymers, cross links, plasticizers and include diagrams."
You don't have to give me a whole essay just something that will help me.
Thank you. x
9 Apr 2010, 5:33 am | click here to read more
What is the name of the plastic used on the inside of an eskie to retain the icy air and is water proof? Is this a polymer? Quickest correct answer will recieve best answer.
8 Jun 2010, 8:19 am | click here to read more
This week we have been learning about plastics and polymers. Did you know that there is a synthetic polymer with fibers that are five times stronger that steel? Describe two ways you could utilize this synthetic fiber.
7 May 2010, 4:23 pm | click here to read more
Hi there. I made some three inches tall figurines in polymer clay. Baked them fallowing instructions, and painted them. I thought that they were stronger than ceramic, but they are as breakable. You drop one figure from your hand to the table (not so high, eh? and it breaks! I am making something wrong when baking them? I hoped that the final product was something more like plastic... Thanks for any help.
7 Jul 2010, 7:30 am | click here to read more
Sources of pollutants
There is no strong scientific data concerning the origins of pelagic plastics. The figure that an estimated 80% of the trash comes from land-based sources and 20% from ships, is derived from an unsubstantiated estimate.[15]However, boat-generated pollution is a source of concern since a typical 3,000 passenger cruise boat produces over eight tons of solid waste weekly, a minor amount of which ends up in the patch, as most of the waste is organic.[16] Pollutants range in size from abandoned fishing nets to micro-pellets used in abrasive cleaners.[17] Currents carry debris from the west coast of North America to the gyre in about six years [1], and debris from the east coast of Asia in a year or less.[18][19] An international research project led by Dr. Hideshige Takada of Tokyo University studying plastic pellets, or nurdles, from beaches around the world may provide further clues about the origins of pelagic plastic.[20]
[edit] Plastic photodegradation in the ocean
Main article: Photodegradation
The Great Pacific trash Patch has one of the highest levels known of plastic particulate suspended in the upper water column. As a result, it is one of several oceanic regions where researchers have studied the effects and impact of plastic photodegradation in the neustonic layer of water.[21] Unlike debris, which biodegrades, the photodegraded plastic disintegrates into ever smaller pieces while remaining a polymer. This process continues down to the molecular level.[22]
As the plastic flotsam photodegrades into smaller and smaller pieces, it concentrates in the upper water column. As it disintegrates, the plastic ultimately becomes tiny enough to be ingested by aquatic organisms which reside close the ocean's surface. Plastic waste thus enters the food chain through its concentration in the neuston.
Some plastics decompose within a year of entering the water, leaching potentially toxic chemicals such as bisphenol A, PCBs and derivatives of polystyrene.[23]
6 May 2010, 1:15 am | click here to read more
I know they're something to do with plastics and lots of monomers make one polmer but nothing I look at really explains what they are. :) thanks
30 Mar 2010, 12:38 pm | click here to read more
Composites (such as carbon-fiber-reinforced polymers) have the properties of both metals and plastics.
3 May 2010, 11:12 am | click here to read more
please help and answer if you can. thanks!!!
1. Your boat is sinking about two miles off shore and you're not a good swimmer. You notice six big solid plastic blocks labeled 1, 2, 3, 4, 5, 6. Having only two arms, which two should you grab? Why?
2. You are on a camping trip and have run out of wood (but there is lots of discarded plastic to bum). Which type of polymer would you use to cook your food? Which type would you use to read by?
3. You are in charge of a recycle middle. Describe a process or series of processes by which you could automatically separate different types of plastic.
4. You decide to jazz up your bathroom cabinet by transferring your fingernail polish into a more stylish container. The next day, reaching for the bottle, you find a messy bloc. What was the stylish bottle probably made of? What is the active ingredient in the fingernail polish?
5. Why is it important to dislodge any adhering bubbles in the density tests?
question #1 refers to these densities:
(1) PET 1.38 to 1 39~
(2) HDPE 0.95 to 0.97
(3) PVC 1.16 to 1.35
(4) LDPE 0.92 to 0.94
(5) PP 0.90 to 0.91
(6) PS 1.05 to 1.07
3 Jun 2010, 2:47 pm | click here to read more
29 Mar 2010, 3:56 am | click here to read more
21. Polymers used in hair gel
A) give the gel its unique color and bubbly texture.
B) allow the gel to stay wet in the container, but dry outside the container.
C) allow the gel to stay wet for long periods of time outside the container.
D) make it so the hair gel can fit into a container of any size or shape.
22. The ability of nylon to __________ make it a practical material to use for a jacket.
A) absorb water
B) change the composition of water
C) resist water
D) both b and c are correct
23. Which part of an automobile is made with polymers?
A) the tires
B) the windshield
C) the leather on the seats
D) the steel frame
24. every of the following are made from polymers EXCEPT:
A) plastic wrap
B) nylon
C) synthetic rubber
D) distilled water
25. Polymers are formed by smaller molecules linked together by
A) ionic bonds.
B) covalent bonds.
C) electric bonds.
D) amino acids.
29 Jul 2010, 1:36 pm | click here to read more
I need to the the cheapest to both make and buy, plus where you got your info please
29 Apr 2010, 8:14 am | click here to read more
what could be added/removed (but mostly added) that will
Organic - polycyclic aromatic hydrocarbons and long-chain polymers
Hydrophilic -> Pharmaceuticals & Antibiotics
-> Plastics and Chlorinated Hydrocarbons
-> Industrial solvents and volatiles
Hydrophobic -> Detergents and oils (can bind to heavy metals )
Inorganic
Heavy Metals - Arsenic, Mercury, etc.
Inorganic Nutrients - fertilizers ( N or P )
- sulfur from hog waste
28 Mar 2010, 8:28 pm | click here to read more
1) Formaldehyde can be polymerized to produce Delrin (polyoxymethylene), a strong and easily molded plastic. Write a chemical reaction that shows the formation of this polymer.
2) Although chlorofluoronitromethane has only one carbon atom, it can exist in two isomeric forms. Explain how this is possible.
3) Why does the rubber in an elastic band easily stretch, whereas the rubber on the soles of shoes does not?
28 Mar 2010, 11:24 am | click here to read more
Hi everybody,
No I am not new to the sport, I just have never fired a ICS model gun before.
I currently possess a Echo 1 and a G&G m4 carbine.
I thought why not buy another one, since the sportline models are so cheap.
They do arrive with the ICS split v.2 gearbox and claims it is the same proline quality as any ICS,
Obviously, the sportline models are made of polymer plastic but that doesn't quite bother me at least its durable.
If anyone owns it, or knows the information, please answer.
I'm looking into the following gun.
http://www.airsoftgi.com/product_info.php?cPath=139_24_83&products_id=6594
28 Apr 2010, 4:40 pm | click here to read more
1) Formaldehyde can be polymerized to produce Delrin (polyoxymethylene), a strong and easily molded plastic. Write a chemical reaction that shows the formation of this polymer.
2) Although chlorofluoronitromethane has only one carbon atom, it can exist in two isomeric forms. Explain how this is possible.
3) Why does the rubber in an elastic band easily stretch, whereas the rubber on the soles of shoes does not?
27 Mar 2010, 11:46 am | click here to read more
What is the common thread here? I'm having systemic contact dermatitis (and erythroderma as a result), but think I've identified a few spots that are constantly flaring up in reaction to a plastic or something in a plastic. They are; ring/hook plastic on bra; steering wheel/gear shift in 2010 Honda Fit; plastic cushion on pen tip (rests against index finger); possibly plastic bags from grocery store; and flare ups around eyes possibly from plastic glasses frames. Could this be a common plasticizer, curing agent or polymer? Something else? I also have PEX pipes and am now getting very dry skin after very brief (like 1 minute) icy showers - but this could be difficult water/ or chlorine content aggrivating my skin I think? How could I be getting systemic exposure? I have a high exposure to degrading cellulose acetate film at work, and recently had to sort through a lot of degrading cellulose nitrate.
I've been to an allergist who is stymied and am waiting to look a specialist.
27 Jul 2010, 9:37 pm | click here to read more
a particular hydrocarbon plastic is very rigid and transparent. it also softens and melts when heated which makes it a thermosoftening plastic. so how would you explain why the plastic is opaque? this is to do with plastic polymers in chemistry. please help!
26 May 2010, 1:24 am | click here to read more
polymer chemistry
26 Mar 2010, 4:54 am | click here to read more
I'm not sure how many know this, but one component of most molded polymers is made from bone marrow of cows, pigs and other slaughtered animals.
For those that do know this, how do find which suppliers ones don't use this?
Zinc Stearate is made from animal parts.
I know some people can purchase kosher forms made of plant products, but I wasn't sure if it was only for religious reasons or if those who were vegetarians made them too.
Okay, vegans then.
John: I'm not very wrong. I actually work in the research lab of a polymer corp. I MAKE plastic. We have these things called "additives". Look up Zinc Stearate. It is actually made of the bone of animals. And we actually obtain a "vegan" version so that it can be labeled "kosher".
Please don't try to school a Senior Polymer Research Chemist on her job or what goes into her product. I receive paid to know this stuff.
Thank you.
And one more thing John, just to reiterate. While a polmer in and of itself is only, uh, polymer (which is stupid for you to say, it's like saying the sun is the sun... not exactly an intelligent ascertion)..
there are a variety of additives which are used in processing or in making the polymer that might affect color, melt flow, melt strength, and a variety of other factors. So, it's not every just a polymer.
25 May 2010, 1:11 pm | click here to read more
1) Formaldehyde can be polymerized to produce Delrin (polyoxymethylene), a strong and easily molded plastic. Write a chemical reaction that shows the formation of this polymer.
2) Although chlorofluoronitromethane has only one carbon atom, it can exist in two isomeric forms. Explain how this is possible.
3) Why does the rubber in an elastic band easily stretch, whereas the rubber on the soles of shoes does not?
24 Mar 2010, 11:52 am | click here to read more
How is it traditional to South African soccer? Do Zulu hunters hunt down the great Lesotho Rubber Antelopes and carve the vuvuzelas from their plastic horns? Or are vuvuzelas carved from the South African polymer trees that grow just south of the Kalahari desert?
Or are they just a cheap, petroleum based product sold by people with investments in earplugs and noise filtering technology and a general nuisance?
24 Jun 2010, 9:37 pm | click here to read more
it was my first time buying the clay and didn't know that i should have tested it out a little at the store. (poking through the plastic or something.) half of the clay is easy to manipulate and make things with. the other blocks are too difficult to move. it's crumbles when i try to take a piece off. i've tried rolling,squishing,smashing, etc tiny pieces but even after almost a half hour of trying to manipulate it, it doesn't do much. it still cracks. how do i make it soft again?
yes, i live on a tiny island.. close the equator. so of course it would basically receive difficult and dry (even in a coldish store)
23 Jul 2010, 3:40 am | click here to read more
I went to the store looking to educate myself on any .40 S&W guns I might want to buy in the future. I asked to look at a standard USP and I was so surprised to look it was now a polymer frame gun. It felt cheap in my hand, like a $20 airsoft gun. I think the magazine release and safety were also plastic. The decocker didn't impress me. The magazine was every plastic and looked like crap. I thought maybe they were taking the sig pro route and trying to receive HK's in people hands for less, but no it was still more than $800.
How do they expect anyone to buy a gun like that? At those prices I'd much rather receive a sig pro. There was a used one there for about $450.
I'm 24 years old and possess 7 handguns. Why would the USP magazines be plastic and the USP compact/P2000 magazines be steel? I'm much more familiar with the HK P2000 so the plastic USP magazines really seemed odd to me.
22 May 2010, 9:20 pm | click here to read more
Plastic is not degradable and only breaks down to polymers which is still plastic. Plastic is forever
Plastic is also not 100% recyclable. Most of it is waste. But why do we still use plastic? Most people, I know fell that they are forced to use plastic because it's everywhere - eg. grocery store etc.
21 Mar 2010, 6:15 pm | click here to read more
We Can Only Use Polymer Materials.
We Can Have Containers(Boxes, Trays, Plastic Cups) And Polymer Things Used In Packaging(Paper, Tyvek, Plastic Foam, Eco-Foam, Cardboard, Fabric, Popcorn, Sawdust, Wood Shavings,Plastic)
It Will Be Dropped From A Distance Of 1m-4m.
The Packaging Had To Be Completely Enclosed, Strong, Inexpensive.
Need Answers By March 21.
21 Mar 2010, 12:06 am | click here to read more
1.The acceleration due to gravity on Pluto is less than that on the Earth. The mass of a person on Pluto will be?
A.greater
B.the same
C.less
2.A container filled with gas has a volume of 185 ml and a pressure of 310 mm Hg. The desired new volume is 74.0 ml. What is the required new pressure?
124 mm Hg
44 mm Hg
775 mm Hg
0.00129 mm Hg
3.Which of the following is not an example of a polymer?
protein
nylon
Kevlar
concrete
4.Which of the following is most likely to be the best conductor of electricity?
oxygen
chlorine
aluminum
chromium
5.When plastic deformation of a material occurs, the material _____.
regains its original shape when the stress is removed
is permanently deformed
becomes magnetic at low temperatures
becomes highly resistant to stress
21 Jul 2010, 5:46 pm | click here to read more
Processor: Intel ® Core ™ 2 Duo 2.53GHz (1066MHz FSB)
Cache: 3MB L2
Memory: 4GB DDR3-1066 (2x 2GB), Max 8GB
difficult steer: 250GB SATA (5400rpm)
Drives: DVD ± RW Double Layer
Card Reader: SD Card
Screen: 13.3 "LED Glossy WXGA 1280x800
Graphics: NVIDIA ® GeForce ® 9400M
Graphics Memory: 256MB DDR3 Shared
Audio System: 16-bit stereo, integrated stereo speakers
Interfaces: 2x USB2.0
FireWire 800
Mini Display Port
Communications: Wireless LAN 802.11 Draft-N
Bluetooth 2.1 + EDR
10/100/1000
Operating System: Mac OS X v10.5 Leopard
Expandability: 2x memory slots (0 available)
Battery: Lithium Polymer (Li-Pol)
Autonomy: Up to 7h (estimate)
Dimensions: 325 x 227 x 24.1 mm
Weight: 2.04 kg
Accessories: AC Power Adapter 60W Mag Safe
Other: iSight WebCam with Integrated Microphone
Track pad with Multi-Touch
Back lit keyboard
Warranty: 2 Years
Condition:
New: A brand-new, unused, unopened and undamaged item in the original packaging (where packaging is applicable). Packaging should be the same as what is found in the retail store. If the item comes straight from the manufacturer it may be delivered in non-retail packaging, such as an unprinted box or plastic bag.
£500 + free P&P
Thanks for help
Is there any way I can tell if it is stolen?
And if it helps, it will arrive from Portugal.
Thanks for every the answers, but I don't need any more answers as I was too tardy to order it and it was sold. ): Thanks to everyone who answered.
20 May 2010, 10:58 am | click here to read more
For example, we want to make a tiny to medium sculpture with Fimo (polymer clay) but don't want it to be solid clay (as the stuff is a little expensive). I'm thinking maybe wire would super heat and burn the clay causing toxic fumes but paper or plastic would burn/melt, it does need to be something that can be easily used and sourced to a UK household. Any ideas? Thanks!
20 Jun 2010, 6:55 pm | click here to read more
Hey, I'm doing a science essay thingie and I need to know where raw materials of my item are from.
I'm doing Glad Plastic Wrap and I need to know where polyethylene, PVC, or PVDC arrive from geographically?
The requirement from my teacher is "The geographic source(s) of your product's raw materials is clear."
yeah.
I know they're every polymers but like, how the hell does Glad receive it to make their plastic cling wrap?
Thanks.
2 May 2010, 1:16 pm | click here to read more
At the moment i'm looking at 4 AEG's and 2 side arms.
AEG's
1.Combat Machine Blow Back M16 Carbine Airsoft Gun ( M4-A1 ) $170
Specifications:
Manufacturer: Combat Machine
Gearbox Type: Custom
Accuracy: 120 ft
Muzzle Velocity: 380-400FPS
Magazine Capacity: 450 rounds
Package Includes: gun, high capacity magazine, cleaning rod
Features:
New Redesigned Gearbox
Plastic Receiver
450 Round Magazine
Country of Origin:
Taiwan
2.ECHO 1 Full Metal MK16 Airsoft Gun (ASC / TAN) $235
Specifications:
Manufacturer: Echo 1
Gearbox: Version 2
Accuracy: 120 feet
Muzzle Velocity: 370-400 FPS
Magazine Capacity: 300 Round High Cap
Package Included: Barrel extension, 2 magazines, battery, charger, foregrip
Features:
Side Folding Retractable Stock
Flip Up Front and Rear Sight
Front and Rear Sling Attachment Point
Ambidextrous Magazine Release
Full Metal Upper Receiver
Polymer Lower Receiver
Adjustable Cheek relax
Convertible Outer Barrel
3.ECHO 1 STAG-15 RIS Airsoft Gun $195
Features:
Metal Outer Barrel
Retractable LE Stock
M4 Length RIS Unit
Working Charging Handle
Metal Hi-Cap Magazine
Stag Arms Trademarks
big Battery Box
Flip-Up Rear Sight
Specifications:
Gearbox Type: Type 2
Magazine Capacity: 300 rounds
Lenght: 680mm
Height: 225mm
Muzzle Velocity: 350fps
Accuracy: 120 feet
Battery Pack Size: big or Custom Battery
Package Includes: Manual, Magazine, Battery, Charger, Cleaning Rod
Made in China
4.AGM Full Metal M4-A1 Airsoft Gun $170
Specifications:
Manufacturer: AGM
Muzzle Velocity: 400 FPS
Magazine Capacity: 300 rounds
Package Includes: gun, magazine, battery, charger
Pistols ( Gas Blow Back )
1.WE Full Metal 1911 4.3 Desert Warrior Airsoft Gun ( No Threaded Adaptor w/ 1 Mags ) $115
Specifications:
Manufacturer: WE
System: Gas Blow Back
Magazine Capacity: 15+1
Gas use: Green Gas / Red Gas / Propane
Package Includes: gun, 1 magazines, and manual
Features:
Metal Slide and Frame
1 Magazines
Ambidextrous Slide Safety
Forward Cocking Serrations
Metal Barrel and Guide Rod
below Barrel Rail for Flashlight
Functional Grip Safety w/ Beaver Tail....ps the fps varies from 325-400
TSD Tactical M9X Mil Spec Blowback Pistol Airsoft Gun $60
Specifications:
Manufacturer: TSD
Muzzle Velocity: 330-350FPS
Magazine Capacity: 26 rounds
Package Includes: gun, magazine, speed loader
every of these guns are found at airsoft gi. im looking to buy one AEG and one pistol. please help me pick.. also if you have any other suggestions about guns in the same price range that you prefer please tell me. thank you.
2 Jul 2010, 6:01 pm | click here to read more
I have just started my service that lets women and girls become mannequins for any time frame from 1 day to 5 years. I have different plastic polymers they are dipped in depending on how long they want to stay as mannequins. I have not got an official office yet so I'm running it out of my home. My middle child, who is 9 years old, was messing around with her friends in my office when her and her best pal accidentally fell into the 5 year plastic polymer dip. They tried to receive out, but by the time they got out, they were both stuck as mannequins. And unfortunately, I can not reverse the 5 year plastic polymer. Should I tell my daughter's friends parents or just rent her out to the stores as a child mannequin? I'm going to rent my daughter out anyway as a mannequin.
19 May 2010, 11:12 am | click here to read more
I have an idea.Modern baby diapers contain polyacrylic acid, a super-absorbent polymer. When some of this polymer was added to a beaker with water and stirred, it absorbed many times its weight in waterPolyacrylic acid is a polymer made from the monomer acrylic acid. These long chains contain thousands of monomer units, and the polymer also has some cross-linking between the chains. Many polymers, such as polyethylene and polystyrene (used in trash bags, plastic bottles, and Styrofoam®, for example) are hydrophobic, meaning they repel water. Polyacrylic acid, however, is very hydrophilic - it attracts water. That's because of the carboxylic acid groups (COOH) in the polymer, which can hydrogen-bond to water molecules.
Diapers contain a tiny amount (4-5 grams) of polyacrylic acid in a powder form, which is mixed into the fluff in the middle layer of the diaper. The inside layer of the diaper allows water to pass through it into the absorbent middle layer, and the outer layer is waterproof, so both baby and mommy stay dry. Polyacrylic acid can absorb about 30 times its weight in water, or about 30 mL (1 oz) of water per gram, so a typical diaper can absorb 120-150 mL of water (about a half cup).
It would do the same to water unless we add it directly to the oil.
18 Jun 2010, 7:28 am | click here to read more
materials like plastics,some containes and nylons(made from polymers) which last around 300 years
17 Mar 2010, 3:48 am | click here to read more
I need to do a project for school in relation to polymer science.. and planned on investigating why beer doesnt arrive in plastic bottles. Please help :)
17 Jun 2010, 2:37 pm | click here to read more
14. The volume of a gas is always the same as the volume of __________.
its container
the atmosphere
its atoms
its molecules
15. What does the atomic number equal?
number of neutrons in the atomic nucleus
number of protons and neutrons in the atomic nucleus
number of protons in the atomic nucleus
16. When two atoms of the same element have different numbers of neutrons and therefore different atomic masses, what are they? (
isotopes
isomers
molecules
17. The measure of how much salt will dissolve into 100 g of water is __________. (
solution
solubility
solute
solvent
19. Which statement best describes plastics? (
Plastics are big inorganic molecules that bond with silicon.
Plastics are big organic molecules called polymers.
Plastics are big inorganic molecules called polymers.
Plastics are tiny organic molecules.
16 Jun 2010, 6:54 am | click here to read more
1.Give methods by which pollution due to plastics can be solved.
2.What are the properties of polythene(polyethylene)?
3.Are polymers natural or synthetic?
4.Name two fibres that are highly inflammable.
5.Why do we use plastic cookwares in microwave ovens?
6.Give the differences between thermoplastics and thermosetting plastics.
7.What is 4R's principle?As a responsible citizen,what 4R's principle should be remembered by us?
15 May 2010, 10:38 am | click here to read more
15 Jun 2010, 6:31 pm | click here to read more
I'm studying in mechanical engineering and i'm really interested in plastic injection design. I don't know much about it so i'm trying to find documentation. Right now, the best book i found is "The Complete Part Design Handbook - For Injection Molding of Thermoplastics" , it explains the difference between multiple polymers, what to do and not to do when dimensioning a plastic part, flexion torsion etc formulas.
Does someone has any suggestions ? Thanks!
15 Apr 2010, 9:29 pm | click here to read more
we have a mounting trash problem and no one seems to really put their minds together and just wish the government thinks of ways of ridding our planet of trash.. how could we make it easier for our planet to break down plastic as an example?.. so far I know it can be UV sensitive over time. but of course not talking about biodegradable trash since it goes away on its possess in time but plastic and polymers/rubber oil etc
ps I'm not asking whether aliens exist but I mean if you really put your brain cells to the task what would you think about? try not to think about your possess needs or ego and problems for a moment and who knows what we can think about.
15 Apr 2010, 7:17 pm | click here to read more
I recently bought a Mossberg 100 ATR in a 30-06. I put about 80 rounds through the barrel and was not glad with my ammo. Now I know that i bought low end ammo ,but I wasn't in the mood to spend $35+ on a box. I shot the Rem Core-Lokt 180gr, which was a decent round. Some crappy Monarch 150gr from academy, and was horrible rounds (I don't recommend buying this). And Federal regular rounds, not premium and this was a good ammo with a good groups. Now what I'm looking for is a flatter shooting round, that is good at 100 to 500yd. I hunt big white tail, and most shots are at 250yd plus. But sometimes, a few friends and I, have little competitions and shoot 600yds for fun.
I don't know much about the polymer plastic tip ammo, but hear they are the bomb and excellent for long distance and hunting.
Can Y'every give me some suggestions on good rounds, like Hornady, Fed., Win., Rem., and any others. Also, what kinds of bullets that are the best, as in soft points, or plastic tips. Thanks.
14 Jun 2010, 7:35 pm | click here to read more
Plastics are polymers, and their basic units are alkenes, which are produced from cracking of crude oil.
So, how else can it be produced once this runs out?
14 Jun 2010, 4:36 am | click here to read more
Surface tension is the reason rainwater will bead up on a waxed surface.
True
untrue
Which of the following best defines an isomer?
A. A molecule that has the same formula but a different structure
B. A molecule that has the same structure but a different formula
C. A molelcule used to dissolve solvent molecules that are both aromatic and saturated
D. A molecule that changes shape when mechanically twisted and bent
Cycloalkanes are alicyclic compounds.
True
untrue
Soaps and detergents are good examples of solvents.
True
untrue
Which of the following is a molecular short name?
A. 1,2-dimethylbenzene
B. 1,3-dibromo-2-cyclodecane
C. 2-chloro-2-cyclopentene
D. o-xylene
Which statement regarding surfactants is accurate?
A. MEK is an example of a surfactant.
B. Surfactants act from deep within a molecule.
C. Surfactants cancel out zwitterionic charges.
D. They are classified as anionic, cationic, non-ionic, and zwitterionic.
Which of the following is a polymer?
A. Benzene
B. Ethanol
C. Methanol
D. Plexiglass
Emulsifiers often cause solvent vapors to explode.
True
untrue
Which statement regarding polymers is accurate?
A. Polymers are always zwitterionic.
B. Polymers can be classified as synthetic polymers and biopolymers.
C. Polymers are classified as cationic and non-ionic.
D. Polymers are classified as hydrophilic and hydrophobic.
Which statement regarding polymers is accurate?
A. Bakelite is an example of an early plastic polymer.
B. Bakelite is still widely used today.
C. Krylon is a polymer that is 100 times stronger than steel.
D. Nylon is the earliest known polymer.
Cycloalkanes are which of the following?
A. Aromatic
B. Conjugated
C. Saturated
D. Unsaturated
Which statement is the correct definition of an emulsifier?
A. An emulsifier is a substance that is always used as a buffer.
B. An emulsifier is a substance that behaves as zwitterionic.
C. An emulsifier is a substance that adds stability, thickness, and texture.
D. An emulsifiers is a chemical substance that is used as asurgical anesthetic.
Aromatic compounds can be polycyclic.
True
untrue
Which statement regarding surfactants is true?
A. Micelles are soluble only in solvents.
B. Surfactants are soluble only in organic solvents.
C. Surfactants are soluble only in water.
D. Surfactants can be soluble in organic solvents and in water.
Which statement is accurate regarding cycloalkanes?
A. They have aromatic properties.
B. They have saturated ring structures.
C. They are unsaturated.
D. They have triple bonds.
Which of the following can aromatic compounds be?
A. Autocyclic
B. Hydrothermal
C. Polycyclic
D. Thermocyclic
Which of the following is a molecular short name?
A. 1,3-dibromo-2-cyclodecane
B. 1,2-dimethylbenzene
C. 2-chloro-2-cyclopentene
D. m-xylene
Which of the following is a polymer?
A. Butanoic acid
B. Ethanol
C. Methyne
D. PVC
youz know you wantz to AnSwer!!! :))))
14 Jun 2010, 12:20 pm | click here to read more
We got two into the store a few days ago.... My first time to really be able to spend some time taking one apart and getting to know it.
It's just the basic model, since the deluxe one isn't out yet.
I just can't say I'm every that fond of it... Why?
-Lot's of plastic, specifically of critical parts such as the receiver and flame control group. Stocks should be plastic to keep weight... Vital parts should be of something more substantial. Anyone who sees my answers knows I'm not a traditionalist by any means... Give me polymer and aluminum. But, polymer on important things... I don't feel we're ready.
The polymer leads to two additional concerns.
-How did they manage to make it so heavy? Good grief. You might as well be carrying an M1 Rifle. With such an extensive use of polymer, shouldn't it be light?
-I thought polymer was supposed to be cheap? At ~$2500... That's not cheap at every.
In addition, I have other complaints...
-Ambidextrous safeties are so uncomfortable. They rub against the index finger of my flame control hand. Very uncomfortable. Make it in available option... But it shouldn't be standard.
-Disassembly isn't quite as intuitive as an AR15. It isn't terrible, and I'm experienced enough that I can basically figure it out based on my knowledge of "the way things are". To others, though, this may not be the case.
-The stock is too short. I'm beginning to become very annoyed with the "tactical" community, in spite of my involvement in it. They make the stock short enough for use with body armor.... But what percentage of their customers are going to be using it with body armor with rifle plates? <1%? The average shooter buying one isn't using rifle plates.
-They didn't improve the extractor. Isn't that what we every complain about, extraction issues? Personally, I like the extractor of an AR15... But most people don't. I can't look why they didn't change that. (My reasoning is that it is better to have a double feed from a failure to extract, clear it, then extract manually.... as opposed to trying too difficult to extract a stubborn case and tearing off the head, putting the rifle out of commission. Just my philosophy... I'd rather have two failures every 5000 rounds that are minor, rather than one disaster every 5000.)
-If you're going to have a proprietary bolt, why not bee fit up a bit? That's one of the few things I like about the HK416 style... They put a nice, chunky bolt in it that looks like it will live a long life. I mean, at least make the area around the cam pin a little bigger.
-The adjustable cheek weld is a nice idea.... But it seems gimmicky in the execution.
The barrel is where my biggest problems are...
-Proprietary? Ok, ok, it has a quick change feature.... So what? How often is that really necessary? An AR15 has a quick change barrel system, too... It's called a new upper. Two pins and it's a change over from .50BMG to .22LR in 15 seconds. It may have a little more weight involved, but not much more.
-Not chromed, and 1/9 rifling twist is the next problem. Chrome extends barrel life incredibly. 1/9 rifling doesn't allow use of the really nice defensive and match loads which 1/7 does. And, since they are proprietary barrels... you have to depends on Bushmaster for them, you can't change it yourself to whatever you want.
.... What do you guys think? Am I way off and this is going to be the next "big thing" or will it be unheard of in ten years.... I'm going with something in the middle. I think people will still be clinging to the concept 20 years from now, with some never willing to give up on it. Most people will look the price and just stick with an AR at 1/3 the cost.
.... And, the basic premise isn't impressive.... It's yet another 5.56NATO rifle with a 30 round magazine, and a piston system that is going to keep the world.
12 Jun 2010, 7:16 pm | click here to read more
and also what can smart polymers used for??
thankss :)
12 Jun 2010, 12:16 pm | click here to read more
1. Repeating units in an organic compound are called __________.
amino acids
monomers
hydrocarbons
polymers
2. What are the properties of organic compounds determined by?
the total number of hydrogen atoms
their ability to react with acids
their boiling point
their functional group
3. What are shopping bags and plastic bottles made of?
polyethylenes
alkyl groups
hydrocarbons
halogens
11 Jun 2010, 6:00 am | click here to read more
Hello.
I'm making an air-dry clay doll. She has a relatively strong armature made from plastic-coated wire, masking tape and there is some bubble wrap in her head.
The only problem I'm encountering as of yet is that the neck keeps cracking and this doesn't look good. I keep trying to seal the cracks with more air-dry clay and letting it dry, yet it seems to be a problem I'm having difficulty improving on.
Therefore, I want to use some PuppenFimo Polymer Clay to smooth over her cracks and then bake her in my convection oven at 110'c for half an hour (max).
Does anybody know of worst-case possibilities in this situation?
Will she explode/crack? I don't think I can leave the convection oven door open whilst it's cooking.
Any help is appreciated greatly.
Thanks.
11 Jun 2010, 12:34 pm | click here to read more
Composites (such as carbon-fiber-reinforced polymers) have the properties of both metals and plastics.
True or False
1 Apr 2010, 5:04 pm | click here to read more