To find this, you're going to need scientific equipment. You will need an oscillator and a microphone, as well as the rubber band. Hook the microphone up to the oscillator and snap the rubber band. View the oscillator to find it's frequency.
One can purchase customer rubber bands by the Alliance Rubber Company or by Wristbands. But on ebay and Amazon one can find also customer rubber bands.
thinka dinka or on line
Formula is velocity=frequency X wavelength so Wavelength = 5m
You can buy thick rubber bands at office supply stores, some supermarkets, and some craft stores. Home depot has really thick ones
Walmart, Halmark, I think a store called... Daisy?, etc.
To find the wavelength, the following formula applies: λ = ν / f That in common words is: Wavelength = Wave's Speed / Wave's Frequency So, Wavelength of sound wave = Speed of sound wave / Frequency of sound wave Now, Speed of sound wave is 343 m/s, so Wavelength of sound wave = 343 m/s / Frequency of sound wave Frequency of sound waves audible to a human ear range between 20 Hz to 20 kHz. So filling the desired sound frequency in the equation above you get the desired wavelength of that sound wave.
Frequency= 226.67 Yes, we can hear this sound.
You can find rubberbands for the office from staples.
First we need the speed of sound in water which (from Wikipedia) is 1498 m/s. velocity = frequency*wavelength, so wavelength = v/f 1498/286 = ___m
Wavelength = speed /frequency = 332/440 = 75.45 cm(rounded)
Measure the length between two crests or two troughs.
It depends on how big you want the ball to be. You can probably make a reasonable sized one with 100-200 rubber bands. One of the big bags you can find in an office supply store would probably be enough to start out with.