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Engineering
Since a plane's wing is designed to fly right side up, how does a plane stay up in the air when it...
the answer
You have hit upon a controversy. Here's an answer from another website (
Physics
Is the line spectrum that is produced by a fluorescent tube the result of some of the visible light...
the answer
Yes. While they are not line spectra, here are some
Physics
If the earth were suddenly stopped in its orbit, how long would it take for it to fall into the sun?
the answer
As it happens, this problem is very difficult to solve analytically (i.e. by...
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Biology
Are double yolked eggs ever viable? Can they be fertilized? If so are they to be fertilized once or...
the answer
[Editor: Quick answers are 1. Yes double yolk eggs can be viable. 2. They...
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