Comments on: Brain Game. The Flying Hummingbird http://geniusbeauty.com/mental-beauty/brain-game-flying-hummingbird/ Magazine for Beautiful Women Sat, 04 Feb 2012 20:42:26 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Brain Game. Matches | Mental Beauty http://geniusbeauty.com/mental-beauty/brain-game-flying-hummingbird/#comment-10574 Brain Game. Matches | Mental Beauty Thu, 04 Sep 2008 23:26:22 +0000 http://geniusbeauty.com/?p=909#comment-10574 [...] here’s the answer to the previous brain game about the flying hummingbird. It was given by Chris - a very good explanation: if the hummingbird weighs 1 gram, the scales will [...] [...] here’s the answer to the previous brain game about the flying hummingbird. It was given by Chris – a very good explanation: if the hummingbird weighs 1 gram, the scales will [...]

]]> By: Geniusbeauty.com http://geniusbeauty.com/mental-beauty/brain-game-flying-hummingbird/#comment-3424 Geniusbeauty.com Tue, 03 Jun 2008 12:59:23 +0000 http://geniusbeauty.com/?p=909#comment-3424 Jed, and if not? Jed, and if not?

]]> By: Chris http://geniusbeauty.com/mental-beauty/brain-game-flying-hummingbird/#comment-3423 Chris Tue, 03 Jun 2008 12:54:13 +0000 http://geniusbeauty.com/?p=909#comment-3423 OK. Let's say the hummingbird weighs (for arguments sake) one gram. The scales will show one gram. As the bird starts to fly the scales will show slightly more than one gram as energy is used to hop (kinetic energy) into flight giving the bird potential energy. As the bird is flying the scales will read one gram since an equilibrium situation between downward thrust of the air having to match the weight of the bird has been reached. As the bird lands the scales will read slightly more than one gram due to the potential energy being turned into kinetic energy and that kinetic energy being dissipated as landing happens. The bird having landed the scales will revert to one gram. OK. Let’s say the hummingbird weighs (for arguments sake) one gram. The scales will show one gram. As the bird starts to fly the scales will show slightly more than one gram as energy is used to hop (kinetic energy) into flight giving the bird potential energy. As the bird is flying the scales will read one gram since an equilibrium situation between downward thrust of the air having to match the weight of the bird has been reached. As the bird lands the scales will read slightly more than one gram due to the potential energy being turned into kinetic energy and that kinetic energy being dissipated as landing happens. The bird having landed the scales will revert to one gram.

]]> By: Jed http://geniusbeauty.com/mental-beauty/brain-game-flying-hummingbird/#comment-3413 Jed Tue, 03 Jun 2008 08:39:52 +0000 http://geniusbeauty.com/?p=909#comment-3413 Is the cover air tight on top of the scales? If it is, the net change will be nil. (May or may not be true I stopped doing science years ago :p) Is the cover air tight on top of the scales?

If it is, the net change will be nil. (May or may not be true I stopped doing science years ago :p)

]]> By: Geniusbeauty.com http://geniusbeauty.com/mental-beauty/brain-game-flying-hummingbird/#comment-3386 Geniusbeauty.com Mon, 02 Jun 2008 19:00:11 +0000 http://geniusbeauty.com/?p=909#comment-3386 Please, describe more detailed, what will the scales show, when the bird starts to fly, is flying and lands back onto the scales (everything under that cover, of course). Please, describe more detailed, what will the scales show, when the bird starts to fly, is flying and lands back onto the scales (everything under that cover, of course).

]]> By: Chris http://geniusbeauty.com/mental-beauty/brain-game-flying-hummingbird/#comment-3363 Chris Mon, 02 Jun 2008 06:03:42 +0000 http://geniusbeauty.com/?p=909#comment-3363 I have to agree with Pete. Nothing will change in a closed system. The hummingbird apparently weighs (typicially) one one fourteenth of an ounce. They are called hummingbirds because they forgot the words. I have to agree with Pete. Nothing will change in a closed system. The hummingbird apparently weighs (typicially) one one fourteenth of an ounce. They are called hummingbirds because they forgot the words.

]]>