Tagged Questions
4
votes
0answers
67 views
Design of experiments to determine proportionality
A common result of theoretical analysis in physics is some sort of relation derived from physical parameters and typically expressed in the form of a non-dimensional parameter. These scale relations ...
-2
votes
1answer
139 views
Understanding pregnancy length and life time based on dimension analysis and order of magnitude estimation [closed]
Based on dimensional analysis and order of magnitude estimation one can understand why for example no warm blooded animal of small size such as rats can live in the north pole, only big animals like ...
7
votes
2answers
664 views
Why are smaller animals stronger than larger ones, when considered relative to their body weight?
I am interested in why many small animals such as ants can lift many times their own weight, yet we don't see any large animals capable of such a feat.
It has been suggested to me that this is due to ...
8
votes
2answers
575 views
How does the period of an hourglass depend on the grain size?
Suppose I have an hourglass that takes 1 full hour on average to drain. The grains of sand are, say, $1 \pm 0.1\ {\rm mm}$ in diameter.
If I replace this with very finely-grained sand $0.1 \pm 0.01\ ...
