Heavy-duty AA alkaline dry cell\'s (+) terminal is 1.6 [V] higher than its (?) t

Question

Heavy-duty AA alkaline dry cell's (+) terminal is 1.6 [V] higher than its (?) terminal; they can deliver 1/16 [C/s] for 50 hours. . . . a) How much Energy does it start with? . . . b) What Power use (in [Watt] !) will drain that battery in 50 hours? . . . At this drain rate, the "terminal voltage" starts at 1.54[V] , decreasing to 1.28[V] after 25 hour and 1.02[V] after 50 hour. . . . c) How much Energy does the user get from the battery? . . . how efficient is that discharge? (slower discharge => terminal closer to 1.6V)

Explanation / Answer

1) 0.13 Mj/kg 2) 1.80 watt 3) 130000 J

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