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For this question, you're given an unknown device that uses 1.5 W-hour battery. In the spec sheet, power requirements of different modes are shared with you . Mode A uses 6000 mW, . Mode Buses 9000 mW, and Mode Cuses 3 W Assuming you'll be using the device in mode A how long in terms of minutes) do you think the battery will last theoretically? Your answer: 1t5 6ct 10 1115 16 t co20 21