need a laugh

[solarman216]

here I am bored to tears with a pulled back and getting pissed.

So Question 1
Can a solid burn?

Question 2
if water did as most other stuff does and got denser when frozen (ie heavier) instead of lighter, would we humans be able to survive on earth,

answers on a post card please,

OK on here will be good,

Rick

[rustic]

To help you out..
What solids burn?
Wood, Coal, Paper, ....

Ice gets less dense as it gets colder, that's why it floats on water.

Water has it's maximum density at 4C that's why fish can survive when the water above them has turned to ice.

Rustic

[solarman216]

sorry but those items in there natural state do not burn, and yes ice floats so what if it did not? Rick

[Lazy-Ferret]

.... and yes ice floats so what if it did not? Rick
Well all those Souls on the Titanic would not be dead :D

I would presume that if all the Ice sank, the water levels would rise, drowning most of us.

As far as burning a Solid, the thing that comes to mind is Wire wool, it's made from Steel, which is a solid, just thin strands, but it burns very easily.

[don simon]

1) Doesn't the said solid need oxygen to burn? And as there is no oxygen within a solid then no. Or the solid heats up to a gaseous state and appears to burn.
2) Ain't got a chuffing clue.

[rustic]

Did you know, water is special, without it's properties, I doubt life would exist.
It is, as far as I am aware, unique.

It can exist as a solid, a liquid and a vapour at the same time...
At a certain temperature and pressure.
It's called the triple point of water.
The temperature on the graph is show in degrees Kelvin, to convert to Celsius,
approx 273 K = 0 C

A good friday night discussion.:thumb2

[solarman216]

OK Clive you have the second one, yes if all the ice sank there would be very little land mass to support life, if at all.

Don Simon yes only a gas can actually burn, so everything can burn but has to attain a temperature to turn it into a gas first, Rick

[solarman216]

Rustic that is just too complicated on a Friday night, and with the likes of Clive and Don my little forray did not last too long did it, will have to think of some more.

How about a prop shaft, is it constant velocity? Rick

[don simon]

Have you done the possibility of an airplane taking off from a conveyor belt yet? :sly

[solarman216]

Have you done the possibility of an airplane taking off from a conveyor belt yet? :sly

not heard that one, but as the plane makes its own thrust by moving air it would matter little what it is standing on providing it can manage enough thrust to get airborne, Rick

[don simon]

Doesn't the plane need to be moving forward to provide lift? The conveyor belt will render the plane stationary, won't it?

[briggie]

Doesn't the plane need to be moving forward to provide lift? The conveyor belt will render the plane stationary, won't it?

as long as the air underneath the plane is moving , it will provide lift

[solarman216]

:thumb2[QUOTE=don simon;296271]Doesn't the plane need to be moving forward to provide lift? The conveyor belt will render the plane stationary, won't it?[/QUOTE

No because the thrust developed by the plane is independent of the conveyor belt, it may take a bit longer to get airborne, but it will get there, Rick

[rustic]

Doesn't the plane need to be moving forward to provide lift? The conveyor belt will render the plane stationary, won't it?

Wind is required to travel over the wing to give lift.
If the aeroplane is stationary, and you tether it, so it can only move up or down, and have a huge fan, pushing air at well over 125 mph...... the aeroplane would go up vertically.
:thumb2


Now if you were in a car travelling at the speed of light, on a road and shined a headlight onto the road, would you see the cat's eyes...?


Alex... this is not a challenge, it is a hypothetical question...:doh

[don simon]

:thumb2[QUOTE=don simon;296271]Doesn't the plane need to be moving forward to provide lift? The conveyor belt will render the plane stationary, won't it?[/QUOTE

No because the thrust developed by the plane is independent of the conveyor belt, it may take a bit longer to get airborne, but it will get there, Rick

But that still needs air flow over the wings, so the answer is that it can't as the plane would have to be moving faster than the speed of the conveyor. I'm thinking that if you blow along a table top on which a piece of paper is sitting, the paper will be lifted off the table top. it will basically hover as it doesn't have thruster to make it move

[rustic]

You are offered a pill that makes you 25% more intelligent but permanently removes your hair including eyebrows. Do you take it?


I have.. lol...
:lol

[solarman216]

[QUOTE=solarman216;296275]:thumb2

But that still needs air flow over the wings, so the answer is that it can't as the plane would have to be moving faster than the speed of the conveyor. I'm thinking that if you blow along a table top on which a piece of paper is sitting, the paper will be lifted off the table top. it will basically hover as it doesn't have thruster to make it move

because the planes trust is independent of the belt it will still move forward into the air stream, unless you are talking of a conveyor belt that is going at more than 300 Mph but you did not say that, Rick

[don simon]

[QUOTE=don simon;296279]

because the planes trust is independent of the belt it will still move forward into the air stream, unless you are talking of a conveyor belt that is going at more than 300 Mph but you did not say that, Rick
I think the given is that the conveyor is there to cancel any forward movement from thrust.

[rustic]

Well it's friday night, not much on Tv... so here is my last thought...


If you were to lose all five of your senses, how would you know if you were truly alive?

Lets think of the five senses.
Sight
Hearing
Touch
Taste
Smell

[don simon]

Well it's friday night, not much on Tv... so here is my last thought...


If you were to lose all five of your senses, how would you know if you were truly alive?

Lets think of the five senses.
Sight
Hearing
Touch
Taste
Smell
Why the hell would I care? :p

[solarman216]

Now if you were in a car travelling at the speed of light, on a road and shined a headlight onto the road, would you see the cat's eyes...?


Alex... this is not a challenge, it is a hypothetical question...:doh

of course not as nothing can travel at more than the speed of light ( as far as we know at this time), but neutrinos are passing through your body and the earth at very high numbers all the time, they pass between the gaps between atoms and electrons that make up your body and the so called solid earth and not very many collide with an atom, most pass through us and the earth unhindered, food for though, Rick

[solarman216]

[QUOTE=solarman216;296283]
I think the given is that the conveyor is there to cancel any forward movement from thrust.

yes in that case the plane cannot fly, but I do not know of a belt that can support 300 tonnes of plane and travel at 300 MPH, Rick

[solarman216]

Well it's friday night, not much on Tv... so here is my last thought...


If you were to lose all five of your senses, how would you know if you were truly alive?

Lets think of the five senses.
Sight
Hearing
Touch
Taste
Smell

think you would still be able feel your heartbeat, but what a life, Rick

[Lazy-Ferret]

[QUOTE=don simon;296284]

yes in that case the plane cannot fly, but I do not know of a belt that can support 300 tonnes of plane and travel at 300 MPH, Rick

Surely the conveyor belt is immaterial, a plane does not use it's wheels to get momentum, so whether the ground is moving or not, once the jets, or prop spin up, the plane will move forward. Ok, so the wheels of the plane would have to be spinning relatively faster than than the plane is moving, but that is all.

[Terrano Steve]

I too would be interested to see this conveyor that is going to support the weight of the plane and accelerate at exactly the same speed as the plane accelerates.

[solarman216]

[QUOTE=solarman216;296293]

Surely the conveyor belt is immaterial, a plane does not use it's wheels to get momentum, so whether the ground is moving or not, once the jets, or prop spin up, the plane will move forward. Ok, so the wheels of the plane would have to be spinning relatively faster than than the plane is moving, but that is all.

I go with that Cllive, thrust is against the air, not being driven by the wheels, Rick

[Terrano Steve]

You are offered a pill that makes you 25% more intelligent but permanently removes your hair including eyebrows. Do you take it?


I have.. lol...
:lol
I clearly have not taken such a pill as I have loads of hair:stupid

[Lazy-Ferret]

OK Clive you have the second one, yes if all the ice sank there would be very little land mass to support life, if at all.

Don Simon yes only a gas can actually burn, so everything can burn but has to attain a temperature to turn it into a gas first, Rick

OK, I put a lot of thought into this last night... sad I know... but I guess the first issue, is how you define a solid. If you are saying it has to be a "Pure" material, then that cuts the number of available things down considerably. E.g, You can't have brass, but you can have Copper, Tin, and Zinc. If this is the case, what about Magnesium, it is a solid, can be melted into a liquid, but will combust, even burning in non-oxygen environments. So surely this is a Solid that can burn?

The bit I find ironic is, it also used to fireproof wood???

[solarman216]

OK, I put a lot of thought into this last night... sad I know... but I guess the first issue, is how you define a solid. If you are saying it has to be a "Pure" material, then that cuts the number of available things down considerably. E.g, You can't have brass, but you can have Copper, Tin, and Zinc. If this is the case, what about Magnesium, it is a solid, can be melted into a liquid, but will combust, even burning in non-oxygen environments. So surely this is a Solid that can burn?

The bit I find ironic is, it also used to fireproof wood???

The short answer at the end of the day is everything can be made to "burn" but all has to turned into a gas first, Rick

[Mobieus_uk]

my short answers are yes the plane will take off and everything burns eventually

[supergnome]

Rustic.....got any of those pills left??

[rustic]

Rustic.....got any of those pills left??

Got some new ones today....:doh

[macabethiel]

[QUOTE=Lazy-Ferret;296311]

I go with that Cllive, thrust is against the air, not being driven by the wheels, Rick

Just a minor point thrust works in a vacuum no need for air I suspect one of Newtons Laws applies somewhere in all of this!

Add up all the forces acting on the Plane and you would get the result. (Including Gravity, friction etc)