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Mathematics 12 Online
OpenStudy (anonymous):

the wattage rating of an appliance is gien as w, in watts and varies jointly as the resistance, r, in ohms and as the square of the current i in amperes. if the wattage is 36 watts whaen the resistance is 100 ohms, and the current is 0.6 amperes find the wattage when the resistance is 300 ohs and the current is 0.5 amperes

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