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A parallel-plate capacitor has 1.00 cm2 plates that are separated by7.00 mm with air between them. If a12.0 V battery is connected to this capacitor, how much energy does it store?
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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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