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“Seeing” surfaces at the nanoscale. One technique for making images of surfaces at the nanometer scale, including membranes and
Figure 11.40
Problems 66–68.
66. If we model the vibrating system as a mass on a spring, what is the mass necessary to achieve the desired resonant frequency when the tip is not interacting with the surface?
- A. 25 ng
- B. 100 ng
- C. 25 μg
- D. 100 μg
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