What is the force constant of the spring

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Q. When a 4.90 kg object is placed on top of a vertical spring, the spring compresses a distance of 2.43 cm. What is the force constant of the spring?

Q. When a potential difference of 140 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 27.0 nC/cm2. What is the spacing between the plates?

Reference no: EM1347519

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