Soldato
It's 8.3 light-minutes away, so in day time, 8.3 minutes, at night, 8.3001 minutes.so if the sun suddenly went poooff, how long would we have before we said, aye aye summat's up ?
It's 8.3 light-minutes away, so in day time, 8.3 minutes, at night, 8.3001 minutes.so if the sun suddenly went poooff, how long would we have before we said, aye aye summat's up ?
It's 8.3 light-minutes away, so in day time, 8.3 minutes, at night, 8.3001 minutes.
Hopefully there'll be no friction between you two? Best to let it slide.
I remember those, I had a book of Autocar or some car magazine road tests with one in it, remarkable things
****, what IS the speed of gravity?but does the earth stop orbiting the sun from the moment of poof or 8.3 minutes later when we also lose the light?
ie what is the speed of gravity?
#deep
****, what IS the speed of gravity?
Not a concept I'd even considered before. Either way I think we'd all be dead within 8.4 minutes.come back when you've answered that and i'll give you a nobel prize
Not a concept I'd even considered before. Either way I think we'd all be dead within 8.4 minutes.
Ah right depends what you understand by the Sun going 'poooff', I assumed explosion but I guess makes more sense (and poses a more interesting question) to understand that as the Sun just ceasing to give off heat and light.i dunno, wether the gravity ceases immediately or 8.3m later it's gonna take at least a day before the collapse of society, theoretically some people could survive for a very long time given our technology for self sustaining via alternate energy sources.
it does also raise the notion of life being possible on an exoplanet, after all what you need is energy and a molten core planet will have plenty of that sun or no sun.
so if the sun suddenly went poooff, how long would we have before we said, aye aye summat's up ?
It is a shame they never quite made it into production.
But they got very close. The Rover P6 was the body that they planned to put the Gas turbine engine in as a separate production run to the piston versions. (Hence the unusual configuration for the front suspension)
.....
And the rest, as they say, is History! (
Any chance you could elaborate on your post? Preferably so it makes a modicum of sensespot the fallacy
I mean, IIRC TV is basically when the forces of gravity and drag even out, but in this case it's rolling not falling so its momentum is also aided by the centrifugal force involved?Any chance you could elaborate on your post? Preferably so it makes a modicum of sense
Thanks, that helps a lot1. As well as gravity and drag (from both air resistance and friction in this casE), TV is affected by the buoyancy of an object (so in air it's very little, but still exists)
https://en.wikipedia.org/wiki/Centrifugal_force3. No such thing as centrifugal force
https://en.wikipedia.org/wiki/Centrifugal_force said:"fictitious"
'appears to act'
I mean, IIRC TV is basically when the forces of gravity and drag even out, but in this case it's rolling not falling so its momentum is also aided by the centrifugal force involved?
1. As well as gravity and drag (from both air resistance and friction in this casE), TV is affected by the buoyancy of an object (so in air it's very little, but still exists)
2. Where did you get the notion of centrifugal action for a coin rolling down a slope?
3. No such thing as centrifugal force, and there's certainly no centripetal force in this example.
This is coming from someone who probably thinks they know more than they actually do about physics (me not you).
i suspect he's considering angular momentum to be a source of energy, but the thing is it's quite the reverse acting as a storage for energy, in his version it's the force of friction that adds to the angular momentum (assuming the centre of mass of the coin is in the centre of it's diameter).
of course friction is a result of the normal reaction force which will be the majority of the gravitational force that isn't the tiny amount that's accellerating the coin sideways.
if we really want to go into this i can go write out the full equation but i feel that's too much nerdery even for ocuk.
You'd be better brushing up on your grammar and punctuation, on complex subjects clarity is paramount, your post is unreadable