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visits member for 2 years, 9 months
seen Nov 12 at 12:52

Apr
4
comment Why are bricks typically constructed to have six faces at, or near right-angles to each the other?
I would argue that structure in fig 1, although susceptible to shear is more resistant to earthquakes -- small yields are better than total collapse. Some soft buffer material, e.g. sand or hay or wool is probably required though.
Apr
4
comment The other side of the lever
Yes, it's a trick question, the answer is to wiggle your lever ;-)
Mar
31
answered Why is an electron still an elementary particle after absorbing / emitting a photon?
Jan
23
comment Why do tuning forks have two prongs?
I would prefer a tuning fork that produces set tone regardless where in the world I happen to be. That is with as little influence of surrounding air as possible. Same goes for expansion coeff. of metal.
Jan
22
comment Why do tuning forks have two prongs?
and that's by design. a random two-pronged object would not necessarily have that porperty. a random shaped object usable as a crude tuning fork (e.g. a tincan) certainly does not have that property.
Jan
22
awarded  Teacher
Jan
22
answered Why do tuning forks have two prongs?
Jan
22
comment Why do tuning forks have two prongs?
If that were the case, would the frequency of tuning fork not depend on density of air?
Mar
1
awarded  Supporter