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Some practical uses for concave and convex mirrors are in medical instruments, car mirrors, and telescopes.
randomness
A photocopier.
The load.
remote
I believe they are mainly used for observational purposes - that is, they are observed, and conclusions are taken about the Universe.
Some practical uses of GPS tracking devices are knowing the whereabouts of own kids, of elder people, emergency assistance in case of car crash or lost, journal keeping and pet location purposes. Other practical uses might be 911 calls optimization, finding of shortcuts easier and getting social information.
what are the practical uses of bec
Ununtrium has not practical uses.
Any practical uses.
Hassium has not practical uses.
Hassium has not practical uses.
Ununseptium hasn't practical uses.
Francium hasn't practical uses.
Any practical uses, only for research.
Dubnium hasn't practical uses.
Only for experiments, not practical uses.