As you may already know, the SI unit for frequency is Hertz (Hz); an event that repeats once per second has a frequency of 1 Hz. According to most sources, the human hearing (frequency) range is between 20 Hz and 20,000 Hz (bats can hear up to 100,000 Hz!).
Note: Some jurisdictions have laws requiring passengers on bicycles to be at least one year old. Usually by age 12 months parents can start checking with the child's physician to see if they have the neck development to safely go for a bike ride.elevance. Rating Newest Oldest. Best Answer: Obviously a child can't be on a bike until they can safely wear a helmet. http://www.helmets.org/little1s.htm Nobody we have met in the injury prevention field recommends taking an infant of less than 12 months in a bicycle child seat, trailer, sidecar or any other carrier.
Asker's rating. Report Abuse. I learned at 3, but it all depends on how well developed the kid is, all kids develop at different levels and they might not get the hang of riding a bike until they are 10 or so, but I would say the average age that a child is able to ride without training wheels would be 5 or 6.OIAMAQT Â· 8 years ago.Thumbs up.1. learned at 3, but it all depends on how well developed the kid is, all kids develop at different levels and they might not get the hang of riding a bike until they are 10 or so, but I would say the average age that a child is able to ride without training wheels would be 5 or 6. OIAMAQT Â· 8 years ago. Thumbs up. 1.