In radiofrequency (RF) ablation, a small needle is inserted into a cancerous tum

Question

In radiofrequency (RF) ablation, a small needle is inserted into a cancerous tumor. When radiofrequency oscillating currents are sent into the needle, ions in the neighboring tissue respond by vibrating rapidly, causing local heating to temperatures as high as 100 degrees celcius . This kills the cancerous cells and, because of the small size of the needle, relatively few of the surrounding healthy cells. A typical RF ablation treatment uses a frequency of 750kHz .What is the wavelength that such radio waves would have in a vacuum?

Explanation / Answer

3.0*10^8/750k = 400m

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