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Q. A 13.50 m long wire of mass 173 g is stretched under a tension of 269 N. A pulse is generated at one end, and 16.50 ms later a second pulse is generated at the opposite end. Where would the two pulses first meet?

Q. Consider a tungsten filament in a light bulb. After the bulb has been on for an hour, how has the resistance in filament changed (if at all)?

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