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Q. An object is located 13.0 cm in front of a convex mirror, the image being 7.40 cm behind the mirror. A second object, twice as tall as the first one, is placed in front of the mirror, but at a different location. The image of this second object has the same height as the other image. How far in front of the mirror is the second object located?

Q. How many 111 W lightbulbs can you use in a 107 V circuit without tripping a 16 A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each lightbulb is 107 V.)

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