PHY 221 Lecture 10: More Uniform Circular Motion

(a) S


(b) O


(c) H


(d) C


(e) a halogen


(f) N

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Car batteries are often rated in amp-hours. This ratingindicatesthe quantity of charge that can pass through the batterybefore thebattery's chemical energy must be restored by the car'sgeneratoror some other source. The amp-hour unit is convenient forsimplecalculations. For example, a 60-amp-hour battery can supplyacurrent of 1.0 A for 60 h (or 60 A for 1.0 h) before goingdead.Find the energy stored in the following.