Question 4 An ultrasonic cleaner uses sound waves to dislodge particles of dirt from the item being cleaned. In order for the sound waves to be most effective, they should have a wavelength as close as possible to the size of the particles. If an item were covered in particles of dirt of an average diameter of 0.1 mm, what frequency would you choose on your ultrasonic cleaner to best clean the item, assuming that the bath is filled with alcohol, in which the speed of sound is about 1150 m/s? 23 Hz 11.5 МНz O 23 kHz 11.5 kHz 23 МHz
Question 4 An ultrasonic cleaner uses sound waves to dislodge particles of dirt from the item being cleaned. In order for the sound waves to be most effective, they should have a wavelength as close as possible to the size of the particles. If an item were covered in particles of dirt of an average diameter of 0.1 mm, what frequency would you choose on your ultrasonic cleaner to best clean the item, assuming that the bath is filled with alcohol, in which the speed of sound is about 1150 m/s? 23 Hz 11.5 МНz O 23 kHz 11.5 kHz 23 МHz
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Transcribed Image Text:Question 4
An ultrasonic cleaner uses sound waves to dislodge particles of dirt from the item
being cleaned. In order for the sound waves to be most effective, they should have a
wavelength as close as possible to the size of the particles.
If an item were covered in particles of dirt of an average diameter of 0.1 mm, what
frequency would you choose on your ultrasonic cleaner to best clean the item,
assuming that the bath is filled with alcohol, in which the speed of sound is about
1150 m/s?
23 Hz
11.5 МНz
O 23 kHz
11.5 kHz
23 МHz
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