What is the density of white cement?
The density of white cement typically ranges from 3.0 to 3.2 grams per cubic centimeter.
How long can you last on a planet without any oxygen?
The exact length of time a person can survive without oxygen depends on various factors, such as individual health and physical condition. In general, the average human can survive for about 3-5 minutes without oxygen before experiencing brain damage or death.
What height does a feather have to fall from to kill you?
A feather falling from any height cannot kill a person because it is too light to cause harm. The force generated by a feather falling is negligible compared to the force required to cause harm to a person.
What is the angular speed of a particle performing 56 RPM along a circle?
56 rpm = 56 rotations per 60 secs. ω = 2π/T (from http://blade3891.tripod.com/id9.html)
ω is the angular velocity.
T is the period. This is the number of seconds it takes to complete one rotation. Since it takes 60 seconds to complete 56 rotations, it takes 60/56 seconds to complete one rotation.
T = 60/56.
so ω = 2π/(60/56) = roughly 5.86 radians per second
What is the time difference between London England and Orlando Florida?
I wanted to watch a live ppv online that starts at 8.00 (in orlando) and now i have to wait till 2am and ive got school the following morning.... any1 know dr Who?
PS Orlando is has a 5 hour time differense so when its midnight here its 5 there
How do you test for real amber?
(Test 1) HARDNESS.
Amber has hardness on Moh's scale in the region of 2 - 3. Using appropriate scratch sticks it should be reasonably straightforward to test the sample under question.
(Test 2) HOT NEEDLE.
Heat a needlepoint in a flame until glowing red and then push the point into the sample for testing. With copal the needle melts the material quicker than amber and omits a light fragrant odour. Amber when tested does not melt as quickly as the copal and omits sooty fumes.
(Test 3) SOLUBILITY.
Copal will dissolve in acetone. This test can be done by dispensing the acetone from an eyedropper onto a clean surface of the test specimen. Place one drop on the surface of the test piece and allow to evaporate, then place a second drop on the same area. Copal will become tacky; amber will remain unaffected by contact with acetone.
(Test 4) UV
Copal under a short-wave UV light shows hardly any colour change. Amber fluoresces a pale shade of blue.
(Test 5) FRICTION
Rub the specimen vigorously on a soft cloth. True amber may omit a faint resinous fragrance but copal may actual begin to soften and the surface become sticky. Amber will also become heavily charged with static electricity and will easily pick up small pieces of loose paper.
(Test 6) TASTE
An antique trader who specialised in amber beads introduced this test to me. She explained that one of the most reliable tests she used was to taste the amber specimen after washing it in mild soapy water and then plain water. Whilst she could make no distinction between copal and amber, she could easily identify plastics and other common substitutes because of their unpleasant or chemical taste. Amber has hardly any taste at all. As a method for identification I have not seen this procedure recorded elsewhere. I can vouch for its effectiveness as a non-destructive method of differentiating between amber and certain other substances often misleadingly labelled amber.
(TEST 7) FLOTATION (Specific Gravity)
Mix 23gms of standard table salt with 200ml of luke warm water. Stir until completely dissolved. Amber should float in such a mixture and some copals together with various plastics sink.
(TEST 8) INCLUSIONS
Infrequently amber contains Flora or Fauna inclusions. Correctly identifying the trapped Insect or plant should be an excellent indicator of a piece's authenticity. Most inclusions from ancient amber are of species that are now extinct or significantly changed. Frequently present in Baltic amber are tiny stellate hairs which are release by oak buds during their early growth and some time after,
(TEST 9) POLARISED LIGHT
Place the suspect piece of 'amber' between two sheets of polarising glass or plastic. (Kokin Filter Systems who sell lens accessories for cameras sell such products). Rotate one of the polarising lenses slowly through 360 degrees. In the body of the amber a display of rainbow colours should cycle through the transparent parts of the material. This is due to interference patterns being induced in the polarised light because of the internal strains and stresses within the amber itself. My general experience with this method is that genuine amber and copal always show these colour changes, where as some acrylics, polymers and certain plastic do not. Amber, which has been drilled and then later filled with a contemporary inclusion and resin also, reveals its self via the clear disruption of the colour display. Essentially; an amber piece which does not show interference patterns is unlikely to be true amber.
(TEST 10) KNIFE CUT
With a sharp knife try to shave off a tiny piece of the amber from an unobtrusive section. Real amber fractures and splinters. plastic and polymers actual cut and tiny shaved pieces can be removed without any splintering of the material.
"Identifying true amber (." Amber Home. 10 Mar. 2009 <http://www.gplatt.demon.co.UK/identify.htm>.
The term composition is used for any stable explosive, and "Composition A" and "Composition B" are other known variants. C-4 is 1.34 times as explosive as trinitrotoluene (TNT).
You tell me
What is the thing called that keeps rope on clothesline from drooping?
A pulley system is commonly used to keep the rope on a clothesline taut and prevent it from drooping. The pulley helps distribute the weight of the laundry, allowing it to move smoothly along the line without sagging in the middle.
What is shorthand for feet inches?
feet=ft. inches =in. More information In the UK - and maybe elsewhere - it is customary to us the single apostrophe for feet and a double apostrophe for inches, for example, 5' 2" = five feet and two inches. This is commonly used on plans and work diagrams where space for the full words, or even "ft" and "in" is too limited.
What is the definition of an eco station?
<p>"Ecostation" is a term used by the city of Edmonton, Alberta, Canada to refer to a hazardous and recyclable materials drop off facility. These facilities handle materials ranging from paint to batteries, computers to cardboard. Materials are sorted and relevant waste disposal fees assessed. Materials are then transported to the appropriate facilities for permanent disposal or recycling. More <a href="http://www.edmonton.ca/for_residents/garbage_recycling/eco-stations.aspx">here</a>.<p>
To get the answer to this you need to know how many inches are in a foot. There are twelve inches in every foot, knowing this all you have to do is multiply twelve by six then add the 2 extra inches. 12 in x 6 = 72 in + 2 in = 74 in
What will cause a gps not to recognize a destination in a city?
:
When using a GPS unit to locate addresses and places in a very dynamic (fast changing) environment, you may find what you are led to is no longer there. The maps on your GPS device are not realtime or updated automatically, they are often released once per year, and your device could qualify for a free update, depending on several factors. The destination you are choosing may no longer be located at the same address, or the road it exists on wasn't present at the time the maps were published and put into the GPS device.
Visit a GPS web forum to discuss your options, or visit the GPS manufacturer's website to see what updates are possible.
Possible reasons include omission from the locations database, use of incorrect city or state, component failure in device, non-existence of location (as when a skyscraper eliminates whole block of apartment buildings) or exceeding distance limitations of the device or system.
Alternatives: Try addresses without a building number; enter only part of a landmark's name (like Battery instead of Battery Point in NYC); and ask someone for directions!
What happens to M8 paper when it comes in contact with a liquid nerve or blister agent?
M8 paper is a chemical agent detection paper used by the military to detect nerve or blister agents. When it comes in contact with liquid nerve or blister agents, the paper changes color to indicate the presence of the harmful substances. This color change helps personnel identify the type of chemical agent present and take appropriate safety measures.
When was Daylight Saving Time begun?
Daylight Saving Time has been observed somewhere in the U. S. every year since 1918, but it was only nationwide 1918-1919, 1942-1945, and since 1967. The Uniform Time Act of 1966 took away the states' right to choose when they observe Daylight Saving Time, but it allows them to choose if they observe Daylight Saving Time. Clocks in most of Arizona haven't been adjusted since October 29, 1967, and clocks in Hawaii haven't been adjusted since June 8, 1947.
What is the formula name for HIO4?
HIO4 is an iodine oxoacid widely referred to as periodic acid (in Dutch: Periodsaeure, and Ueberiodsaeure) and hyperiodic acid (as HIO4). It is also referred to as tetraoxoiodic acid, and by the names of its covalent compounds: its conjugate base, periodate (hydrogen tetraoxoiodate, as HIO4), and iodic acid (as HOIO3). Other references are hydroxidotrioxidoiodine (as HIO4), hydroxy-lambda(7)-iodanetrione (as IO3(OH)), iodic (VII) acid and orthoperiodic acid (both as H5IO6); as well as various chemical registry numbers. An alternative form of H5IO6 is shown as HIO4 • 2 H2O.
Other online resources may have text details on hydration and anhydration factors, covalency (with or without double bonds), mirroring or reverse mirroring, etc. The following links might be useful according to the purpose.
How do you install pendant light adapters on Juno track lighting?
Item no: T31
Pendant Adapter Brand: Juno Lighting
* Adapts swag or chain-hung fixture to trac * Includes strain relief for 3-wire cord (replaces chain loop) * Supports up to 25 lbs * Not UL listed * 2.5A max Height: 2 in Item no: T31
Pendant Adapter Brand: Juno Lighting
* Adapts swag or chain-hung fixture to trac * Includes strain relief for 3-wire cord (replaces chain loop) * Supports up to 25 lbs * Not UL listed * 2.5A max Height: 2 in
Whats the difference between a strait and an isthmus?
an Isthmus is a narrow strip of land with water on either side joining higher land at either end. A strait is a narrow passage in the sea between higher land on both sides. So in short, an Isthmus is land and a strait is water
What are the disadvantages nylon fiber?
Physical weaknesses:
- High moisture pick-up with related dimensional instability
- Requires UV stabilization
- High shrinkage in molded sections
- High moisture absorptivity degrades electrical and mechanical properties
- Attacked by oxidizing agents
- Attacked by strong acids and bases
- High notch sensitivity
Social weakness: environmental problems regarding its lack of being biodegradable and general pollution.
This is a very short and broad answer, but hope that helps.
Why do you smell like alcohol after using testim?
Testim (R) is a transdermal Testosterone supplementation medication. One of the ingredients in the liquid that comes in each tiny tube is an alcohol which contributes to the alcohol-like smell.
See "Related Links" below for the full FDA information sheet on Testim.
What is the ultimate minute indivisible particle of matter?
The ultimate minute indivisible particle of matter is an atom. Atoms are made up of protons, neutrons, and electrons, which are further made up of even smaller particles called quarks.
How much body heat can be lost through your head?
While the idea that most of the body heat is lost through your head is a myth, about 7-10% of body heat can still be lost through the head if it is left uncovered in cold weather. It's important to keep your head covered in extreme cold conditions to help regulate your body temperature efficiently.
What happens if a plasma ball cracks?
If a plasma ball cracks, the gases inside may escape, causing the ball to lose its effectiveness. Additionally, the cracked glass could pose a safety risk by exposing the electrical components inside. It is important to discontinue use and dispose of the cracked plasma ball properly.
What is the land called between trenches?
The land between trenches in trench warfare during World War I was known as "no man's land." This area was a barren and dangerous stretch of land that separated the opposing forces. It was filled with obstacles such as barbed wire, shell craters, and unexploded ordnance, making it extremely hazardous for soldiers to cross.