Things you always wanted to know the answer to [Vol. 3]
Discussion
RizzoTheRat said:
Ah but that's an artificial vacuum 
You need a slightly bigger budget to do the experiment properly
https://www.youtube.com/watch?v=oYEgdZ3iEKA
Excellent! Well done boys, you can come home now, mission accomplished. Now, to build that conveyor belt.... You need a slightly bigger budget to do the experiment properlyhttps://www.youtube.com/watch?v=oYEgdZ3iEKA
just realised that i put the address slightly wrong on an order i placed last night (different to the one above). the number is off by 1. what are the chances if it gets to the sorting office that they'll understand when I show them my ID? (which is going to be 1 number off from whats on the delivery information).
ambuletz said:
just realised that i put the address slightly wrong on an order i placed last night (different to the one above). the number is off by 1. what are the chances if it gets to the sorting office that they'll understand when I show them my ID? (which is going to be 1 number off from whats on the delivery information).
I'd be calling the vendor as soon as I realised. The humourless drones behind the sorting office's public counter will be in over-drive for Christmas.(The name on the parcel should see you secure it!)
gowmonster said:
yes but an anvil weighs more than a marble, so the one with the least wind resistance is the marble (assuming the anvil is the classic anvil shape) but the one with the more weight is the anvil, so does the weight overcome the air resistance?
In the absence of air resistance (or where air resistance is equal) - heavy objects experience exactly the same acceleration due to gravity as light ones The classic "hammer and feather" experiment proves this unequivocally.
https://www.youtube.com/watch?v=5C5_dOEyAfk
More information on this:
https://en.wikipedia.org/wiki/Galileo%27s_Leaning_...
Moonhawk said:
In the absence of air resistance (or where air resistance is equal) - heavy objects experience exactly the same acceleration due to gravity as light ones
The classic "hammer and feather" experiment proves this unequivocally.
https://www.youtube.com/watch?v=5C5_dOEyAfk
More information on this:
https://en.wikipedia.org/wiki/Galileo%27s_Leaning_...
bit in bold is misleadingThe classic "hammer and feather" experiment proves this unequivocally.
https://www.youtube.com/watch?v=5C5_dOEyAfk
More information on this:
https://en.wikipedia.org/wiki/Galileo%27s_Leaning_...
when the force of drag equals the WEIGHT, the object stops accelerating
a hollow plastic ball will quickly reach this point (its terminal velocity) whereas a plastic ball filled with sand will continue accelerating until the drag increases (velocity squared) then it will reach its much higher terminal velocity
weight absolutely does matter when something is falling through air
go and sign up for a tandem skydiving jump, when they ask you how much you weigh say "it doesn't matter, feathers and hammers etc"
Hugo a Gogo said:
bit in bold is misleading
when the force of drag equals the WEIGHT, the object stops accelerating
a hollow plastic ball will quickly reach this point (its terminal velocity) whereas a plastic ball filled with sand will continue accelerating until the drag increases (velocity squared) then it will reach its much higher terminal velocity
weight absolutely does matter when something is falling through air
go and sign up for a tandem skydiving jump, when they ask you how much you weigh say "it doesn't matter, feathers and hammers etc"
Your weight is to ensure that the tandem parachute that you land under is rated correctly more than terminal velocity considerations. The heavier the load under a parachute (ram air rectangular parachute not old military ones), the more aggressive it flies, turns faster, descends faster, makes it harder to land and therefore more dangerous for the tandem passenger who has likely never experienced it before. when the force of drag equals the WEIGHT, the object stops accelerating
a hollow plastic ball will quickly reach this point (its terminal velocity) whereas a plastic ball filled with sand will continue accelerating until the drag increases (velocity squared) then it will reach its much higher terminal velocity
weight absolutely does matter when something is falling through air
go and sign up for a tandem skydiving jump, when they ask you how much you weigh say "it doesn't matter, feathers and hammers etc"
As for the question about weight and free-fall, here's a graphic from NASA. So heavier objects of the same size will accelerate at roughly the same rate but will continue to a higher maximum speed (something that makes skydiving quite tricky when you've got large weight differences between skydivers and why people jump with lead weightbelts)
Roofless Toothless said:
I had a spell while younger working on the drilling rigs as a geologist. Most of the time was spent in Venezuela, and we used to get some wild and woolly stuff going on down there in Lake Maracaibo.
On one rig, a beat up old platform towed over from Louisiana, we had a blockage, suspected to be an air lock, in the domestic water system. The tool pusher (boss man) decided to blow the water round the pipes by connecting it up to the pressurised air system. Of which we had two, a relatively low pressure one and an evil high pressure one for drilling purposes. Of course, he decided to go for high pressure, for s
ts and giggles, I suspect.
We were told not to open any taps so that they could direct the flow around the pipes as desired to clear the blockage. We complied, all except my mate, another British geologist, who had no idea what was going on as he was peacefully sitting on the bog, reading a book and minding his own business.
While it was all pressurised up, he finished the task, and with his pants still round his ankles turned round to flush the bowl. Of course, on rigs just like on ships, the water doesn't come from a cistern, but directly from the main and there is a lever to open the tap and release just enough, but no more, water than you need to do the job. This means the flow is directionally proportional to the pressure in the system.
Unfortunately the high pressure blast he released, on trying to make its way round the channels in the rim of the bowl, proved too much for the ceramic to handle, and the rim exploded all over the place, leaving just a jagged stump where the bowl formerly was, and a very surprised offshore geologist standing there, pants at half mast, covered in st and porcelain.
His plaintive cries led us to the rescue, but he was never the same man again.
I was already crying by the third paragraph. On one rig, a beat up old platform towed over from Louisiana, we had a blockage, suspected to be an air lock, in the domestic water system. The tool pusher (boss man) decided to blow the water round the pipes by connecting it up to the pressurised air system. Of which we had two, a relatively low pressure one and an evil high pressure one for drilling purposes. Of course, he decided to go for high pressure, for s
ts and giggles, I suspect.We were told not to open any taps so that they could direct the flow around the pipes as desired to clear the blockage. We complied, all except my mate, another British geologist, who had no idea what was going on as he was peacefully sitting on the bog, reading a book and minding his own business.
While it was all pressurised up, he finished the task, and with his pants still round his ankles turned round to flush the bowl. Of course, on rigs just like on ships, the water doesn't come from a cistern, but directly from the main and there is a lever to open the tap and release just enough, but no more, water than you need to do the job. This means the flow is directionally proportional to the pressure in the system.
Unfortunately the high pressure blast he released, on trying to make its way round the channels in the rim of the bowl, proved too much for the ceramic to handle, and the rim exploded all over the place, leaving just a jagged stump where the bowl formerly was, and a very surprised offshore geologist standing there, pants at half mast, covered in s
t and porcelain.His plaintive cries led us to the rescue, but he was never the same man again.
This a co-incidence.
My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
Edited by Johnspex on Monday 27th November 21:37
We watched that film about Alan Turing at Bletchley Park recently. Obviously much was made about the contribution of our code breakers to the Allied success in the war.
It occurred to me that our own radio transmissions must also have been monitored by the Germans throughout the war, and they must have been as busy as we were trying to break our codes.
Does anybody know how successful they were in this respect? I can't recall ever reading anything about it.
It occurred to me that our own radio transmissions must also have been monitored by the Germans throughout the war, and they must have been as busy as we were trying to break our codes.
Does anybody know how successful they were in this respect? I can't recall ever reading anything about it.
Johnspex said:
This a co-incidence.
My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
49 of these?My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
Edited by Johnspex on Monday 27th November 21:37
you have no idea how difficult it was to find a pic of nuns in a hot tub.
Wiccan of Darkness said:
Johnspex said:
This a co-incidence.
My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
49 of these?My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
Edited by Johnspex on Monday 27th November 21:37
you have no idea how difficult it was to find a pic of nuns in a hot tub.
Johnspex said:
Wiccan of Darkness said:
Johnspex said:
This a co-incidence.
My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
49 of these?My daughter and a group of friends have been doing one of those number/letter quizzes.
You know the type- 7d in a w or 365 d in a y and so on.
The co-incidence is that the one they did had its origins in the Ariel forum in 2005 !
They've got all the answers except 49n in HT. Lower and upper case as shown originally.
I'm going to go and clean my teeth and get ready for bed and I bet the answer is here before I get back. Thanks.
Edited by Johnspex on Monday 27th November 21:37
you have no idea how difficult it was to find a pic of nuns in a hot tub.
V8mate said:
ambuletz said:
just realised that i put the address slightly wrong on an order i placed last night (different to the one above). the number is off by 1. what are the chances if it gets to the sorting office that they'll understand when I show them my ID? (which is going to be 1 number off from whats on the delivery information).
I'd be calling the vendor as soon as I realised. The humourless drones behind the sorting office's public counter will be in over-drive for Christmas.(The name on the parcel should see you secure it!)
We regularly get mail for next door, the stupid school their obnoxious kid attends is apparently incapable of the most simple bits of administration. Mail delivery woman is really nice and very helpful, usually, but on this issue a bit of a jobsworth.
How does a Super Market decide how much to discount something by? Do they take it down to their cost, is it below cost to make something rather than bin it? Does the out of date stuff go in the bin? Does the oik on the gun have control or is it now computerised centrally and he just prints the ticket?
Bullett said:
Truckosaurus said:
Ayahuasca said:
....Nowadays do they just use their iPhones and whatsapp the secret documents back to base, or do they use a secret special spy app?
One assumes that in this day and age there is no need to actually send a man in to look at Secret Documents, they are copied via the use of computer hackers and any 'secret special spy app' will be sneaked onto the phone or laptop of unsuspecting workers in interesting places (eg. whoever cleans Putin's office) to capture whatever the camera and microphone can pickup as they wander about the building.Which is also why you are not normally allowed to take mobiles into secure facilities.
Jonnny said:
How does a Super Market decide how much to discount something by? Do they take it down to their cost, is it below cost to make something rather than bin it? Does the out of date stuff go in the bin? Does the oik on the gun have control or is it now computerised centrally and he just prints the ticket?
There's LOADS of factors around what drives it - way too many to really list! Sometimes it is just discounted by whatever the bods in Commercial think they can get away with without losing money. Other times it does actually lose money, but the losses are outweighed by incremental sales (called a Loss Leader - drives punters in and they buy other stuff while they're there).Most big ones will have rebate agreements with suppliers too, whereby they say "we usually buy this pen at £1 cost price, but if we sell 1million of them, you need to give us a 10% back based on the quantity we bought". They can then use this 10% rebate to offset against the reduced profits from discounting the product.
Bear in mind that most big chains will generally have a margin of about 30% on anything they sell (so they buy the pen for £1 and sell it for £1.30), so there is plenty of room for them to drop the price to drive the sales in order to get that lost revenue back through their rebate agreement.
With out of date stuff, it depends on the stock type really. If it's perishable, they can be required by law to bin it safely. If it's something like a chair or a table, it's down to the store and/or Commercial people to agree how to manage it. I work for a big retailer and the majority of our stock is non-perishable, so we produce a big list every month/quarter/year of all our clearance stock that's out of date or out of season, give the store the cost price back to their P&L for it and then tell them to skip it/donate it to a local charity.
Price label wise, usually it's centrally loaded onto store databases, but that varies from retailer to retailer depending on what type of system they use.
If an Ai programmer wrote a bit code or an algorithm for a driverless car whilst he was drunk and as a result, some time in the future, that car whilst operating in driverless mode killed a pedestrian, would the programmer be done for drink-driving?
(For the sake of the question, let's assume it can be proven the programmer was drunk at the time he wrote the code).
(For the sake of the question, let's assume it can be proven the programmer was drunk at the time he wrote the code).
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