Things you always wanted to know the answer to [Vol. 2]

[Fastchas]

My football team won this weekend. I was pleased as I attended with my boy.
Considering Kaos Theory, if I didn't attend would the result be the same? Would my non-attendence make ripples resulting in somehow affecting other factors which in turn effected a different scoreline?

[menousername]

These car cleaner outfits you see in the multi story carpark of shopping centres

How do they work? How do you know its safe?

From what I can see you leave your car and possessions in the trust of a random guy in overalls in a car park for the duration of your shop?

Can you take as long as you like to shop?

Do you leave them your keys too so they can move it?

Do you plan ahead and remove all items and loose change from your car before going?

[StevieBee]

menousername said:

These car cleaner outfits you see in the multi story carpark of shopping centres

How do they work? How do you know its safe?

From what I can see you leave your car and possessions in the trust of a random guy in overalls in a car park for the duration of your shop?

Can you take as long as you like to shop?

Do you leave them your keys too so they can move it?

Do you plan ahead and remove all items and loose change from your car before going?

To operate in a car park (supermarket or town centre), the car wash company would have to first convince the owner of the car park that they are a credible company and hold the correct insurances, checks on employees, training, etc, as it is the owner of the car park that remains liable for any damage to your car whilst there (in essence, there are some exceptions).

[TwigtheWonderkid]

Fastchas said:

My football team won this weekend. I was pleased as I attended with my boy.
Considering Kaos Theory, if I didn't attend would the result be the same? Would my non-attendence make ripples resulting in somehow affecting other factors which in turn effected a different scoreline?

Possibly.

Steven Gerrards free kick against Basel last week. He hits it against the post and it rebounds in. But he didn't just glance the post, he hit it pretty full on to the post. Usually that would rebound out, or rebound across the goal, not in. Another fraction of a mil tot he left, a bit a grit on the ball or the post, a minute difference to the air current, and it may have not gone in at all. That kind of tiny difference could be made by one person.

[SpeckledJim]

Fastchas said:

My football team won this weekend. I was pleased as I attended with my boy.
Considering Kaos Theory, if I didn't attend would the result be the same? Would my non-attendence make ripples resulting in somehow affecting other factors which in turn effected a different scoreline?

Possibly. But completely impossible to test.

With reference to the oft-cited idea of the '12th man', then you could claim to be a small contributory part of the success.

[lambysdad]

walm said:

To cope with the stress of our bellies.
http://www.valetmag.com/ask-valet/style/2011/sidew...

Well I never! Thanks

[TwigtheWonderkid]

SpeckledJim said:

Possibly. But completely impossible to test.

With reference to the oft-cited idea of the '12th man', then you could claim to be a small contributory part of the success.

Quite often the ball will go into the crowd and be thrown back by a fan. Depending on how they throw it depends where the player or the ball boy catches it and the position from where play restarts. That difference is then multiplied with every kick of the ball. The whole game will pan out completely differently than it would have done had you thrown the ball back harder or softer.

And the result will effect future games, whether teams qualify for a tournament or not, effect thousands of fans who travel, and indeed can change the whole history of the planet.

In the 1970 WC quarter final England were 2-0 up with a great chance for 3-0. The ball was going in and a player could have tepped it in, but left it to avoid taking the glory of the other player. But the ball took a bobble and went past the post. We went on to lose 3-2. It is said that Labour would not have lost the election of few days later had we won the game. People were depressed about the result and wanted a change, so Wilson lsot to Heath. He buggered up the miners strike, 3 day week, Thatcher became leader, won in 79, the Falklands etc. It all could have been so different if the ball hadn't bobbled.

[fomb]

AstonZagato said:

Also, I wondered why they put attachment points on wings (yellow thing):



Surely they rarely, if ever, get used. What's it for?

It's a safety thing. The use of overwing exits in a ditching varies from airline to airline. On aircraft fitted with overwing exits, there is typically a raised escape rope bracket (about a third of the way from the door) attached to the wing's upper surface and typically painted yellow. This is accompanied by an escape rope found in the frame of the exit after opening the hatch. Once this rope is attached to the escape rope bracket, it will aid passenger evacuation onto the wing to await rescue or to enter the water (depending on the airline's procedures). On aircraft with life rafts to be launched via the overwing exit, the wing will be used to provide a boarding platform onto the life raft. On certain regional aircraft, the overwing exits are the only escape route in the event of a ditching.

[singlecoil]

Fairground roundabout turning quite fast, out of control, clockwise. Suddenly the bolts holding one of the seats break, and the seat and occupants are thrown off due to the centrifugal? force. If this happened exactly as the seat was passing North, what direction would they be thrown in and would it be a straight line?

[LordGrover]

Unless there is another force acting on it, it will follow a straight trajectory. Probably.

[SpeckledJim]

singlecoil said:

Fairground roundabout turning quite fast, out of control, clockwise. Suddenly the bolts holding one of the seats break, and the seat and occupants are thrown off due to the centrifugal? force. If this happened exactly as the seat was passing North, what direction would they be thrown in and would it be a straight line?

"Passing North"? So heading East. In a straight line.

[walm]

singlecoil said:

Fairground roundabout turning quite fast, out of control, clockwise. Suddenly the bolts holding one of the seats break, and the seat and occupants are thrown off due to the centrifugal? force. If this happened exactly as the seat was passing North, what direction would they be thrown in and would it be a straight line?

The only thing keeping them moving in a circle was the seat bolts, so without them, yes, they will move in a straight line (heading East). Until they bounce off a nearby tree.

[singlecoil]

For clarity I should say that what I meant when I said passing North was that the seat bolts let go at exactly the time when the seat was on a line drawn between the hub of the roundabout and due North.

[fomb]

singlecoil said:

For clarity I should say that what I meant when I said passing North was that the seat bolts let go at exactly the time when the seat was on a line drawn between the hub of the roundabout and due North.

Yup, they'll still be eastbound.

[Cliftonite]

Northbound.

[fomb]

Cliftonite said:

Northbound.

Not so sure. If you swing a slingshot above your head, and let go when the end is directly in front of you, it won't stop, turn left and fly out in front of you.

[Ayahuasca]

fomb said:

Cliftonite said:

Northbound.

Not so sure. If you swing a slingshot above your head, and let go when the end is directly in front of you, it won't stop, turn left and fly out in front of you.

Hold your phone in your hand at arms length out to your side.


Move your arm rapidly so that it is directly in front of you.

Let go of your phone.

Which direction did it fly off in?

[Cliftonite]

In the sport of throwing the hammer, which way is the end of the hammer pointing when it is released? Which way does it go?

[goldblum]

Cliftonite said:

In the sport of throwing the hammer, which way is the end of the hammer pointing when it is released? Which way does it go?

The hammer thrower has directional input.

[walm]

Cliftonite said:

Northbound.

Absolutely not.

When on a circle, the direction you are travelling (called the tangent) is always perpendicular to the line between you and the centre.

Imagine zooming in on the arc of the circle you are on... if you keep zooming essentially it will become a horizontal line - that is your direction of travel.

So without any forces on you, once the bolts break - you will continue in this direction.
(Hence "going off at a tangent" )
This diagram shows it but at the wrong place and anti-clockwise but you get the idea.