I can sizzle like bacon

I can sizzle like bacon, I am made with an egg,
and I have plenty of backbone but lack a good leg.
I peel layers like onions, but still remain whole;
I can be long, like a flagpole, yet fit in a hole.
What am I?

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A non-stop train

A non-stop train leaves Moscow for Leningrad at 60 mph. Another non-stop train leaves Leningrad for Moscow at 40 mph. How far apartare the trains 1 hour before they pass each other?

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100 miles (60 + 40 = 100 miles)