Sponsored Links
2
2scoops0406
All right another one, a perfect sphere inside a cone, with the edges of the sphere just touch the inside of the cone, what fraction of the volume of the cone does the sphere occupy ?
As in all good school person days
Volume of a sphere = 4/3 Pi R (cubed)
Volume of a cone = 1/3 Pi R h
Should be easy was in the Metro not long ago.
It's theoretical again, no atoms / quantum bolloc*s allowed.
As in all good school person days
Volume of a sphere = 4/3 Pi R (cubed)
Volume of a cone = 1/3 Pi R h
Should be easy was in the Metro not long ago.
It's theoretical again, no atoms / quantum bolloc*s allowed.
2
2scoops0406
Oops, sorry, 1/3 Pi R (squared) h.
Might make life a bit easier.
Might make life a bit easier.
Sponsored Links
- Joined
- 13 Jan 2003
- Messages
- 1,147
- Reaction score
- 5
- Country
I think I was correct with my answer Softus:
If r = 6378.137km, then distance around is the cirumference = 2xpixr
circumference = 2 x 3.142..x6378.137 = 40080.212908km
Therefore approx. 40080.2km
if the radius increases by 1m = 0.001km, then r = 6378.138km
circumference = 2x3.142..x6378.138 = 40080.219192km
Therefore approx. 40080.2km
As I stated to the nearest km - no difference.
If r = 6378.137km, then distance around is the cirumference = 2xpixr
circumference = 2 x 3.142..x6378.137 = 40080.212908km
Therefore approx. 40080.2km
if the radius increases by 1m = 0.001km, then r = 6378.138km
circumference = 2x3.142..x6378.138 = 40080.219192km
Therefore approx. 40080.2km
As I stated to the nearest km - no difference.
2
2scoops0406
nelsy said:
You are approximately correct.
2
2scoops0406
OK, earths a bit puny, we want to do the same for the sun, which has a diameter of 1391980 Km approximately. What's the answer here ?
Also the largest sun in the known universe which has a diameter of 19907564394594948 Km (ok, I made this up) ?
Also the largest sun in the known universe which has a diameter of 19907564394594948 Km (ok, I made this up) ?
- Joined
- 19 Jul 2007
- Messages
- 5,949
- Reaction score
- 1,143
- Country
Its so F*****g hot the rope would set on fire!!!
2
2scoops0406
I know what the answer is. It's always 2 pi and irrespective of the original r. Just a light hearted question.
so no matter the original length, if it was suspended 1m above the surface it would only ever be 6.284 meters longer?
water does not swirl different ways depending on which hemisphere..
many try to explain that it does by using "coriolis force" which says that in the northern hemisphere, things further north move slower than things further south causing a clockwise rotation..
in reality, this is only visible on a massive scale in some weather paterns and would not affect a mass of water so small..
water does not swirl different ways depending on which hemisphere..
many try to explain that it does by using "coriolis force" which says that in the northern hemisphere, things further north move slower than things further south causing a clockwise rotation..
in reality, this is only visible on a massive scale in some weather paterns and would not affect a mass of water so small..
what happens at the equator? which way does it swirl there?
It just goes straight down
Sponsored Links
