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Admin
Clearly someone forgot to remove their deubg lines on the bank site. or more scary, is debuging real-time.
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Here in Hyderabad, we are frequency getting 0 chanels. [image]
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Helium has weight! It is just that its weight is so little that it gets pushed up by the rest of the air.
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You're right K Johnson, it's not easy.
Write me to [email protected], so we can talk about it.
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For some reason I feel the sudden urge to buy a new MT PT UT RT ET VT FI TOFD.
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Freeview is pretty bad - must live in the same area as me.
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The error in the last image is probably caused by Adblock. You can see Adblock is active from the stop sign in the top right with a white hand inside.
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"This product gets lighter when shipped?"
Before posting it they de-tension the springs...
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After a bit of Googling, I was surprised to find the seemingly garbled junk in the last error message was actually fully valid ad text!
http://i.imgur.com/YYAAq.png
http://www.nde.com/training/
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I did the same googling: "mt pt ut rt et vt fi tofd"
First hit: www.nde.com, obviously [sic] it is the trainings to 'ND' technicians.
I'm much more surprised the OP didn't find it?
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So if I bought a tank of helium, would they pay me to ship it?
Captcha: eros (no, no, that's not what the helium is for)
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Weight =! Mass
Weight is the force on an object due to gravity and buoyancy. Therefore, while a helium balloon may have mass, it has a negative weight if it rises (or may be weightless if it just floats without rising or falling).
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The Mazon one is surely true. I found myself two or three of these abd much more nonsense values and informations. They fail often there :-)
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Also gas cylinders are really heavy.
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Meant to quote, doh
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I weep for the future of humanity if this is the kind of thought process that is now being taught about science.
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I think K Johnson is just sad that his phone number didn't pop up in the reverse lookup results.
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I dig it...
Out of the grave so I can fuck it again!!! HHHHHHHHOOOOOOOOOWWWWWWWWWLLLLLLLLLL!!!!!!!!!
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What, the thought process of just reading junk off Wikipedia and regurgitating it on a forum somewhere?
Weight is actually the number on my bathroom scale. I've actually found a great weight loss program which I have titled "Lean back on the scale." By removing pressure from the springs, I can lose about 15 lbs in a matter of seconds. (However, like most weight loss programs, the weight just stacks right back on once I stop following the program steps.)
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(Sorry, while trying to emulate an advertiser's brain I forgot to use all capital letters, and I'm not going to go back and retype it now.)
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That definition of weight is downright useless, as it would force you to weigh everything in a vaccume. Not to mention gravity is accelleration, not a force, and even if it was, weight isn't measured in gram-meters per squared second.
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The real WTF for the Gmail ad is not using AdBlock.
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(Off to search for porn of elderly women tripping on their own tits... or each other's [GETTING HARD!])
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It is incorrect to say that a helium balloon has a negative (or zero) weight. The weight of an object only changes when its mass changes or when the gravitational field changes.
Personally, I weep for the future of humanity whenever it occurs to me that people like you aren't sterilised at birth.
You may have to resort to that sort of thing but I learnt the correct terms and usage for these concepts over thirty years ago when my age was in single figures. Again, no. Most bathroom scales (single pan type, digital or spring based) actually measure "apparent weight". This is only the same as weight in an inertial reference frame (non-accelerating for people who need to, but are too lazy to, look it up) where gravity is acting vertically downward.Admin
For the benefit of the woefully ill-informed, here is the correct definition of weight, and some notes on buoyancy...
Mass is an invariant quantity which measures the resistance of an object to having its velocity changed; the higher the mass, the lower the acceleration produced by a given force (Newton's Second Law; F = ma). The SI unit is the kilogram.
Weight is defined as the gravitational force applied to an object by another. In general, this is given by F = GMm/r^2, where M and m are the masses of the two objects, r is the distance between their centres of mass, and G is the gravitational constant. For objects on or near the surface of the Earth, GM/r^2 is approximately constant, and we get F = mg, where g is ~9.81m s^-2. Since weight is a force, its SI unit is the newton.
Objects in a fluid under the influence of gravity experience a buoyancy force, which is due to the pressure difference between the top and bottom of the object. For most objects in air, this is small and tends to be ignored, but if an object weighs less than an equivalent volume of the fluid it's in, the buoyancy force is greater than the weight force, and thus there is a net upwards force. Since helium has a lower density than air, you can construct a balloon containing helium which floats in air.
Obviously given this, the buoyancy force is much greater in denser fluids such as water, which is why a ship or an iceberg float.
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And shouldn't I "weigh less" on high barometric pressure days?
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Maybe, but remember air also has mass and is also affected by gravity and therefore has weight, so while denser air may increase your bouyancy, you also have heavier air pressing down on you. So that 1 atmospheric pressure you usually experiance is just a little higher then normal. I have no idea where the tipping point is between you weighing fractionally less or more.
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E.g. take 2 identical reference masses each of 1 kg and 2 identical bathroom scales. Make sure they measure exactly the same weight. Take one set to the north pole and the other to the equator and you will find that the one at the pole indicates approx. 0.3% more than the one at the equator due to the slightly higher gravitational field (in turn due to the slightly smaller radius at the pole than the equator).
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Actually if you put a helium balloon in a vacuum it will probably explode from the outward pressure of the gas against the relatively weak surface of the balloon, thus making it difficult to weigh the helium -- all your scale will register is a damp rag. http://hopefulhomemaker.com/wp/2010/01/29/the-complete-tales-poems-of-winnie-the-pooh/
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Reverse Polish ... would that be "shilop"?
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Still, I was fantasizing that there would be naked boobies there somewhere, so thanks for taking that away from me.
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If weight =! Mass, then when Mass is true, weight will be set to false, and vice versa.
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Hey, aren't the admins supposed to be anonymizing these posts? I really don't appreciate having my son's name, 3995599, posted on a public web site.
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Dividing by the total weight gives that the scales are under-reading by about 0.1% due to buoyancy. This is probably much smaller than the measurement accuracy for your average bathroom scales.
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Not to derail the helium/bouyancy/weight conversation -- but it looks like all that's happening is that the shipping department is using kilos.
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And shouldn't I "weigh less" on high barometric pressure days?
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Oops, cocked that last bit of quoting up a bit...