Recent content by jetwaterluffy

Watch any prank patrol episode. They are kids to be fair, but still...

I don't know what the girl scouts are, but scout groups are given charity status automatically. http://scouts.org.uk/supportresources/1578/registering-as-a-charity?cat=262&moduleID=10 http://www.charity-commission.gov.uk/Start_up_a_charity/Do_I_need_to_register/Types_of_charity_index.aspx

https://www.youtube.com/watch?v=xo-tWlETq8w

10^17-10^16= 9e16s or 90'000'000'000'000'000s seconds. Not ten seconds. This a logarithmic scale.

If it starts water-filled, it should work to an infinite extent, there was a video in YouTube about this not long ago. Not a reliable source, I know, but how else do you explain why trees are over 10m? https://www.youtube.com/watch?v=BickMFHAZR0 Although if there is any air bubbles in the...

Because from metres per second you can work out joules energy or Newtons force straight away, so it makes more scientific sense, which is what the SI units were invented for. True, in a real life situation km/h is easier, but I'm just saying km/h isn't SI.

A lot of people are saying it was faked and the patient is actually an actor (regardless of what derren said in that YouTube video). What does physicsforums think?

Well the elastic walls should be vibrating due to the temperature, so it would gain energy every time it hits the walls, presuming it bounces off. But temperature is about average particle energy, so I'm really not sure if you can apply it to a single particle.

Km/h isn't SI derived either (although a lot better than mph). The SI version of speed is m/s.

Actually, for really loud sounds such as the death star exploding aalderen I can't see why they shouldn't make a noise in space. Space isn't a perfect vacuum, after all, and when you have 10^38J or 10^32J whatever, even a small fraction of that is going to make a gigantic noise that even...

Electromagnetic waves are waves in electromagnetic fields. Hence the name.

Isn't this what happens in stars? So all you need to do is build a star and then you're sorted. In fact, I think what you described is what actually happens in star formation.

In which case, sample A would probably mix with the water in the insects body anyway, leading to some form of HDO automatically.

No matter how identical they appear, one will always be harder to smash than the other. And once one starts yeilding, it becomes a lot less tough and will continue shattering due to being the easier path, whist the other one has no need to.

No, convection has the opposite effect. To my knowledge convection never increases a thermal gradient, only decreases it. The main reason why is that energy from the sun is transferred into the ground, but not the air, because the air is transparent and the ground isn't. So an object further...