Determine the spring constant of elastic cord
An elastic cord is 65 cm long when a weight of 56 N hangs from it and is 82 cm long when a weight of 84 N hangs from it. What is the "spring" constant of this elastic cord?
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A parallel plate capacitor has a separation of 1.30 mm between its plates. If the electric field strength is 265.0 N/C, what is the potential difference across the plates?
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