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Jun
7
comment Do you pay more for gas when the day is warmer?
But your engine is much more efficient with cold air - as it is more dense. Wonder where the two curves would balance out :-)
Jun
7
answered Why do 3d spheres and gravity tend to rotating discs on one plane?
Jun
3
comment Why do rockets accelerate fastest horizontally?
But surely you need to take the most obvious case - which is from zero to x seconds. If you take too long, the rocket will have hit the ground (as per your answer) and as that will happen relatively rapidly, terminal velocity is not really going to become a major factor here.
Jun
3
comment Why do rockets accelerate fastest horizontally?
But you will also hit terminal velocity in the other directions as well. It will just take longer as acceleration is lower.
Jun
3
comment Why do rockets accelerate fastest horizontally?
QI does get things wrong - sometimes they admit their mistakes on later shows, other times they don't. :-)
Jun
3
answered Why do rockets accelerate fastest horizontally?
May
24
comment Crushing a magnetic field
and the field density would increase :-)
May
18
answered What happens to water level when ice XII melts?
May
4
awarded  Enlightened
May
4
awarded  Nice Answer
May
4
awarded  Yearling
May
4
awarded  Revival
May
4
awarded  Commentator
May
4
awarded  Nice Answer
May
4
awarded  Teacher
Apr
28
comment Why are there more vertical takeoff than horizontal for spacecrafts?
Yes, but they couldn't do it successfully, which is why it is only recently beginning to work.
Apr
28
answered Why are there more vertical takeoff than horizontal for spacecrafts?
Apr
28
comment Energy and Matter
I really think this needs to go to Physics - especially with the imminent demise of Astronomy. The physics guys would be able to give very straightforward answers on the interchangeability of energy and matter.
Apr
24
answered Where can I find information on space navigation, and the people who pioneered it?
Apr
24
answered What is this shadow of the Sun on the Moon?