http://www.ahhsmassage.com/mhz-ultrasonic/
Mhz Ultrasonic
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ULTRASOUND ULTRASONIC BODY MASSAGER PAIN THERAPY 1mhz & GEL D
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$58.95 |
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Ultrasonic Ultrasound Body Beauty Massager Therapy 1MHz
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ULTRASOUND ULTRASONIC BODY MASSAGER PAIN THERAPY 1mhz & GEL
$46.99 |
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ULTRASOUND ULTRASONIC THERAPY MACHINE 1 MHz
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110-220v Ultrasonic Ultrasound Body Beauty Massager Therapy 1MHz J6
$26.62 |
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Ultrasonic Ultrasound Body Beauty Massager Therapy 1MHz
$66.96 |
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Ultrasonic Ultrasound Body Beauty Massager Therapy 1MHz
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110-220v Ultrasonic Ultrasound Body Beauty Massager Therapy 1MHz J6
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NEW ULTRASOUND ULTRASONIC MASSAGER PAIN THERAPY 1Mhz a
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ULTRASOUND ULTRASONIC SKIN MASSAGER PAIN THERAPY 1Mhz a
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NEW ULTRASOUND ULTRASONIC MASSAGER PAIN THERAPY 1Mhz b
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NEW ULTRASOUND ULTRASONIC CARE PORTABLE PAIN THERAPY MASSAGER SKIN 1Mhz c
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NEW ULTRASOUND ULTRASONIC CARE PORTABLE PAIN THERAPY MASSAGER SKIN 1Mhz e
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ULTRASOUND ULTRASONIC SKIN MASSAGER PAIN THERAPY 1Mhz c
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ULTRASOUND ULTRASONIC SKIN CARE PORTABLE MASSAGER PAIN THERAPY 1Mhz d
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ULTRASOUND MACHINE 1 MHz ULTRASONIC
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Ultrasonic Ultrasound Body Slimming Beauty Massager 1MHz Pain Therapy Portable
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What is the wavelength of a 28 MHz ultrasonic wave?
Calculate the wavelengths in air at 20°C for sounds in the maximum range of human hearing, 20 Hz to 20,000 Hz.
First part of the question I already completed. I just need to find out the wavelength of the 28MHz ultrasonic wave.
Thanks.
You would use the same formula as in the first part: wavelength = speed of sound divided by frequency.
So, using 340 m/s for the speed of sound, the wavelength would be:
340 m/s / 28 X 10^6 Hz = 1.21 X 10^-5 meters, or 12.12 µm.
