" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
f-częstotliwość
v=0,68m×89Hz
v=60,52m/s
60,52m/s=60,52×0,001km:1/3600h=0,06052km×3600/h≈217,87km/h