Back to 19.1 Electric Potential Energy: Potential Difference

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Avg difficulty 2.5

A 12.0 V battery-operated bottle warmer heats 50.0 g of glass, 2.50 × 10 2 g 2.50 \times \text{10}^{\text{2}} \text{g} of baby formula, and 2.00 × 10 2 g 2.00 \times \text{10}^{\text{2}} \text{g} of aluminum from 20.0ºC\text{20} . 0ºC to 90.0ºC90.0ºC. (a) How much charge is moved by the battery? (b) How many electrons per second flow if it takes 5.00 min to warm the formula? (Hint: Assume that the specific heat of baby formula is about the same as the specific heat of water.)

OpenStax College Physics 2e, 19.1 Electric Potential Energy: Potential Difference, exercise 29

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.