Is humanity capable of surviving to reach a period of Space Colonisation?
Question being: Are we necessarily capable of reaching this stage of humanity? What kind of massive catastrophes and collapses would prevent us? What technology would we need?
First off, I would like to just clarify...
Sorry, you're right, I just meant that it's me coming to terms with some of the more "grown up" physics, which is great fun, actually, now that it isn't being spoonfed to me.
So a lot of it is reflected by the second shell, which has an initial emissivity (due to much lower temperature) of...
As I said, I haven't come across any of these equations before, or any like them, so I'm not entirely sure what to do with them - so apologies if it seems like I'm being thick.
Oh, well, what I worked out was the energy flux density at 800C (~1000K) so obviously it'll change as energy is given off.
The equation I need to use between the two walls is
Which works out as 0.21r, though I'm not entirely sure what I need to do with this.
I don't think I need to...
Thanks, that helped a lot.
Now my rate of radiation appears to be 19,846 W-1m2.
Do I need to now work out the amount the second sheet of metal will absorb, and then consequentially emit into the envrionment?
Well, obviously there's convection, conduction and radiation. I'd assume we don't need to worry too much about the rate of conduction through the first layer of metal, although it's possible the conduction and convection through the salt itself will have some noticable impact on the result...
This isn't actually a homework question, but I didn't want to clutter the other forums because I couldn't do my own calculations.
This is to try and find viable ways of storing energy away from a modern society, and any help would be greatly appreciated.
For (some) ease, say this container...
For this all you need to know - as I'm sure you do - is that any change in velocity means there is acceleration.
So yes, each of your answers are correct, in short.