Find the spacing between the plates
When a potential difference of 156 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 20.0 nC/cm2. What is the spacing between the plates?
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An air-filled parallel-plate capacitor has plates of area 2.50 cm2 separated by 1.00 mm. The capacitor is connected to a 21.0-V battery.
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If 70 percent of a target market sample of 80 people are aware of a brand name, the standard error of proportion for this study is approximately
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