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43 votes
10 answers
5k views

When a cork is pulled out of a wine bottle, why does the inner end often expand more than the outer end?

When I pull a cork out of a wine bottle, it usually expands slightly in circumference. This makes sense: you want the cork to be slightly compressed relative to its natural diameter when it's inside ...
tparker's user avatar
  • 48.4k
3 votes
1 answer
441 views

Grooves on water tank

Why are there grooves on almost every water tank? Just typing water tank in Google images would reveal what I am talking about. And here is a sample picture! I think it would mostly be regarding ...
Zam's user avatar
  • 833
1 vote
3 answers
273 views

Is a well inflated tire less prone than a deflated tire to flatten due to a sharp object? [closed]

When I bought my bike, I've been told that I should make sure the tires are well inflated because this reduces the risks of having a flat tire when rolling over sharp objects, and that it was easy to ...
untreated_paramediensis_karnik's user avatar