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Mathematics 10 Online
OpenStudy (anonymous):

In a US household, the voltage in volts in an electric outlet is given by the following equation, where t is in seconds. V = 156sin(120πt) However, in a European house, the voltage is given (in the same units) by the following equation. V = 339sin(100πt) Answer the following questions comparing the voltages in the two regions. 1. What is the voltage period in a US house? 2. What is the voltage period in a European house? 3. What is the number of cycles (oscillations) per second in a European house?

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