Find the velocity of the wave
The distance between two consecutive nodes of a standing wave is 24.2 cm. The hand generating the pulses moves up and down through a complete cycle 2.84 times every 8.38 s. Find the velocity of the wave.
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A charge moves a distance of 2.3 cm in the direction of a uniform electric field having a magnitude of 239 N/C. The electrical potential energy of the charge decreases by 72.3544 × 10-19 J as it moves. Find the magnitude of the charge on the
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