[Closed] I think I've found the source of thread stupidity

I would expect most people to understand that, which is exactly the same as the pedal thing.

except there's no ceiling to push against...

Also the same with a gun being fired in space

IMO you'd never get the fingers of your space suit gloves through the trigger guard 🙁

junkyard - I have found that quite depressing of late: knowing that no matter how hard I study something, Ill never really know everything about it unless I pick a tiny niche subject.

Well it would obviously have to be a giant novelty gun.

[img] [/img]

The handlebars, or if you're clipped in, the other pedal?

[i]Also the same with a gun being fired in space. Had a few mates once who thought the bullet would just like dribble out of the gun with hardly any speed at all. Its ridiculous.[/i]

Or it might just explode in your face depending on the different thermal expansion rates of the bullet and the barrel 🙂

I could never understand why anyone would think the conveyor belt made any difference to the plane

Because people are unaware of how a plane takes off, and suppose that the wheels are powered and accelerate it up to "take-off speed" ? Just guessing ...

Or it might just explode in your face depending on the different thermal expansion rates of the bullet and the barrel

Things like that I don't think you can expect people with no education in the subject to know about or realise.

Or it might just explode in your face depending on the different thermal expansion rates of the bullet and the barrel

but that effect would be no different in space...

The handlebars, or if you're clipped in, the other pedal?

I don't think pulling the bars would be much cop, as that force would be roughly orthogonal to the pedal force

simonfbarnes - Member

excuse me ? I reckon overall correctness at 15%

Keep going! you'll get to 85% contribution of this thread soon! 😆

but that effect would be no different in space..

Well as soon as you draw the gun the outside would start to cool very quickly since it's cold in space.. actually wait, no it wouldn't. It wouldn't cool hardly at all since there's nothing to conduct the heat away....

Well as soon as you draw the gun the outside would start to cool very quickly since it's cold in space

unless it's sunny 🙂

But would the gun get much warmer in space than on earth? What's the attenuating effect of the atmosphere?

Well as soon as you draw the gun the outside would start to cool very quickly since it's cold in space.. actually wait, no it wouldn't. It wouldn't cool hardly at all since there's nothing to conduct the heat away....

Yes it would, how do you think heat travels through space from the sun to the earth.

I don't think pulling the bars would be much cop, as that force would be roughly orthogonal to the pedal force

Of course it does. Try putting power down without holding on to the handlebars. Especially when you stand up and sprint, you pull the handlebars up to be able to put more force on the pedals.

how do you think heat travels through space from the sun to the earth.

not by conduction, that's for sure.

By radiation. The gun would cool in the same way (or heat up if it were exposed to the sun).

It wouldn't fire at all as there would be no oxygen to ignite the explosion, unless a few O2 molecules were passing by at the time

Of course it does. Try putting power down without holding on to the handlebars. Especially when you stand up and sprint, you pull the handlebars up to be able to put more force on the pedals.

I don't think that can be - if you draw a line from the bars to the shoulders, which is the one the bar force acts along, it's at more or less right angles to the line from your hip to the pedal, so it's not helping. However, if you don't hold the bars you'll probably fall off.

Your all idiot's

Ooh, irony! (-:

Ooh, irony! (-:

don't you mean [b]ireny[/b] ??

irony - having a high ferrous metal content

ireny - like Irene Handl.

hth

I love you guys.

Ooh, irony!

Perhaps some meta-irony?

I've just started riding flats. I assumed i would be able to do the pull up on the bars thing to help me get up the hills singlespeed.

It doesn't help as much as I had hoped but it does make your back twinge.

Sorry for the factual answer, I haven't bothered to read the rest of the thread to gauge the tone.

It wouldn't fire at all as there would be no oxygen to ignite the explosion, unless a few O2 molecules were passing by at the time

Does there need to be oxygen to ignite an explosion?

depends on the type of reaction- I think- that the explosion causes. There are different types but I cant remember the types- a classic level 2 answer I think

Does there need to be oxygen to ignite an explosion?

Explosives are self contained - the oxidant, if required, is included - like the potassium nitrate in gunpowder, though many explosives are metastable and just require a shock (the detonator) to change state.