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question about salt bridge

I am struggling with this question,   a salt bridge in a battery   a.  causes positive charges to build up where oxidate takes place b.  causes negative charges...

Word Problem

1. Charlie wants to build a fence around his rectangular yard. The yard is 16 feet long and has an area of 128 feet. How much fencing will Charlie need?   2. Each hour 17 or 18 planes...

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