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An automotive battery has an emf of 13.4 V. When supplying power to the starter motor, the current in the battery is 20.0 A, and the terminal voltage of the battery is 12.5 V.

(a) How much power is delivered by the battery due to the chemical reactions within the battery when the current in the battery is 20 A?

(b) How much of this power is delivered to the starter when the current in the battery is 20 A?

(d) How much energy is dissipated in the battery during those 5.6 seconds?

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