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Q. A small object with a mass of 260 mg carries a charge of 35.0 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 3.00 cm. If the thread makes an angle of 16.0° with the vertical, what is the potential difference between the plates?

Q. A certain freely falling object requires 1.85 s to travel the last 31.0 m before it hits the ground. From what height above the ground did it fall?

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