Electrical power is often used to boil water for cooking.Here are the results of an experiment: a liter of water initially at 30 ^◦C was boiled on an electric stove top burner. The burner is rated at 6.67A (maximum instantaneous current) and 240 VRMS. It took 7 minutes 40 seconds to reach the boiling point. The experiment was repeated using an “electric kettle.” The kettle is rated at 15A (maximum instantaneous current again) and uses ordinary (US) line voltage of 120 VRMS. This time it took 4 minutes and 40 seconds to reach boiling. What are the power outputs and resistances of the burner and the kettle? Compare the efficiency for boiling water of the stove top burner and the kettle. To what do you attribute the difference?