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Airborne Survey of Polar Ice 2013

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Tue, 04/02/2013 - 14:05

Anonymous

Well, I'd assume 32 degrees Fahrenheit (0 degrees Celsius and 273.15 kelvin), but something about Mr. Mark tells me the answer is cloaked in some trick question..... It could be like salty ice or some magic ice that stays solid at 1000 degrees... or its just ice...

Wed, 04/03/2013 - 03:36

Mark Buesing

You are correct! 32 F or 0 C. Any warmer and it's water (under normal conditions)Send me your mailing address at mmbuesing@gmail.com and I'll send you a postcard from Greenland! How's that for a prize?!

Fri, 04/05/2013 - 16:50

Anonymous

Which is heavier, a kilogram of steel or a kilogram of duck feathers? Would a truck full of flying chickens weigh less than a truck full of brooding chickens?

Sat, 04/06/2013 - 11:58

Mark Buesing

Technically the kg of duck feathers weighs less.  Since duck feathers have a lower density than steel, they displace more volume in air and hence have a larger upward bouyant force.  We can talk vaccums though ...

And it doesn't matter what the chickens are doing.  Can you tell me why?