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Problem: A metal sphere has a charge of +8.8uC. What is the net charge after 2.4 x 1013 electrons have been placed on it?
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Blue-green light has a frequency of about 6.00 x 10^14 Hz. Determine its wavelength. Compare this wavelength to the size of an atom (about 10^-10 m) by calculating the ratio: wavelength/(atom size).
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