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Old 11-28-2012, 02:10 PM   #36 (permalink)
poutanen
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Quote:
Originally Posted by Donutz View Post
40% of sick days happen at the beginning or end of a weekend.
LOL, considering Monday and Friday make up 40% of the work week. I actually find that hard to believe, should be much higher!

Quote:
Originally Posted by drroy View Post
* One Top Fuel dragster 500 cubic-inch Hemi engine makes more horsepower (8,000 HP) than the first 4 rows of cars at the Daytona 500.

* Top Fuel engines turn approximately 540 revolutions from light to light!

* Including the burnout, the engine must only survive 900 revolutions under load.
And that's why a 500 ci engine can produce 8000 HP while a NASCAR engine is under 1000.

What's more amazing are F1 engines. They produce 700+ HP from 2.4L (146 cubic-inch) natural aspirated (non-turbo or supercharged) V8s. They rev to 18,000 RPM (higher than sportbikes). They run on unleaded gasoline, not nitro methanol. They do an entire 2 hour race on one tank of fuel. The engines have to last for several complete race weekends, including testing, qualifying, and the race. These engines likely do up to about 1000 km before being replaced. F1 cars can pull up to 5g in a corner and at least that under braking.

Quote:
Originally Posted by Donutz View Post
What's interesting is that although the two cups of water started out at approx 120* and 50*, by the time the experiment was terminated they were both at 0* within the error limits of my shitty thermometer. This is not surprising since how fast a body loses heat is dependant on the difference in temp between the item and the environment. As the two cups of water cooled to the temp of the freezer, the hotter cup would have lost heat a lot faster initially.
Actually the reason they were both at 0 degrees has more to do with the energy required to freeze the water. It takes 1 calorie of energy to heat 1 ml of water 1 degree C. It takes 80 calories to freeze it.

So if you started with a cup of water at 0 degrees (that was totally in a liquid state), and a cup of water at 79 degrees and put them in equal environments, the cold cup would barely be frozen solid as the first ice crystals were forming in the warm cup.
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