Origins of the Domino Theory. In September 1945, the Vietnamese nationalist leader Ho Chi Minh proclaimed Vietnamâs independence from France, beginning a war that pitted Hoâs communist-led Viet Minh regime in Hanoi (North Vietnam) against a French-backed regime in Saigon (South Vietnam).
The human range is commonly given as 20 to 20,000 Hz, though there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal.
Â· just now. Report Abuse. Jordan is right give him the points. The typical range of human hearing for a child is approximately 20 Hz to 20 KHz, but very few of us over 18 years of age can hear 20 kHz, I do a lot of noise induced hearing loss training and run experiments with guys in the class.Most are lucky to still be playing above about 14 kHz and several below that.But they are older and have been exposed to a working life in a noisy environment. So yeah, it is widely accepted that the range of human hearing is 20 Hz to 20 kHz.ost are lucky to still be playing above about 14 kHz and several below that. But they are older and have been exposed to a working life in a noisy environment. So yeah, it is widely accepted that the range of human hearing is 20 Hz to 20 kHz.