Physics, 16.11.2020 22:30 jolayemihazeez97

What allows seismologist to distinguish between an earthquake and a nuclear test?

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Physics, 22.06.2019 13:50

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Physics, 22.06.2019 16:50

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.