A 5 V battery is rated at 1,709 mAh. What is the battery's lifetime (in hours) if the output current is kept constant at 64 mA?
An electric car has electric motors that dissipate a maximum 19 kW of power. When the car's battery can store 44 kWh of energy, what is the shortest time (in minutes) that a fully-charged battery will completely discharge?
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A 5 V battery is rated at 1,709 mAh. What is the battery's lifetime (in hours)...