Yes because the sound waves are closer together or more frequent. A drum is usually larger than a teakettle, so it will have a lower resonant frequency.
True.
10%
a whistle
whistle
A whistle
True.
false because it does
There is no best frequency. If you train a dog correctly any frequency the dog can hear will control it. Your voice, whistle, 'silent' whistle. All are acceptable.
yes, a whistle sound is high pitched sound
its mostly mammals such as dogs cats rats
Cymbals, muted trumpets, triangle. bats, dog whistle ...
a change in the sound's frequency caused by the motion of the sound's source
A series of high frequency moans, clicks and whistle, some which are audible to our ears.
Yes it does. Higher pitched sounds have higher frequencies than lower pitched sounds.
It isn't louder (loudness has to do with intensity, and a small whistle can't generate that much intensity), it's a higher frequency. In the range that is inaudible to humans.
The longest whistle recorded belongs to a blue whale, which can produce sounds that can travel hundreds of miles underwater. Their low-frequency whistles can reach lengths of up to 188 decibels.
The whistle works by causing the smooth flow of air to be split by a narrow blade, sometimes called a labium or windcutter, creating a turbulent vortex which causes the air to vibrate. The length of the chamber typically defines the resonance frequency.