All Questions
7
questions
8
votes
1
answer
882
views
Why doesn't a blunt-tip nail crack the wood?
I came across this video, which shows you how to prevent the wood from cracking up at the ends while hammering a nail into it. The proposed solution is to make the nail tip blunt using a plier. This ...
- 12.5k
25
votes
6
answers
6k
views
Why does low tire pressure reduce fuel efficiency?
I've always thought that it was because the frictional force on the tire was increased due to the bulging of the tires increasing the surface area in contact with the road. However, a colleague of ...
- 391
2
votes
5
answers
1k
views
Woodworking clamps, does force add up?
I was watching a woodworking video about glue, and the guy was clamping two pieces of wood together using a total of 8 clamps. He argued that by doing so he would apply 8 times the maximum force of ...
- 123
-2
votes
1
answer
4k
views
Physics/forces involved when separating two 5 gallon buckets
So a friend jokingly said "there's no force in the universe stronger than two 5 gallon buckets that are stick together." And I thought that this has to have a wonderfully complex and scientific ...
4
votes
4
answers
876
views
Is it easier to uncrush a water bottle full of air or water?
Say I had a plastic water bottle that was slightly crushed, I could uncrush it (mostly) by covering the opening with my mouth and blowing air into it hard.
Would it be easier to do this if the bottle ...
- 973
3
votes
1
answer
11k
views
Raising a cut on your arm above your heart
I often read that when you have a deep cut on your arm, you should raise your arm to the point where the cut is above your heart. This should reduce the amount of blood loss because less blood reaches ...
- 2,943
2
votes
3
answers
844
views
Why doesn't the air in a Standard Diving Dress crush you?
I recently watched a Mythbusters episode where they tested decompression in a tethered diving suit (which I believe is a Standard Diving Dress). When they removed the air pressure, the suit crumpled ...
- 23