a. Magnet Problem: A magnet repels another magnet with a force inversely proportional to
Chapter 11, Problem R2(choose chapter or problem)
a. Magnet Problem: A magnet repels another magnet with a force inversely proportional to the square of their distance apart. That is, F = k/x2, where F is in pounds and x is in inches. Find the work done in moving the magnets from 3 in. apart to 1 in. apart. b. Conical Cup Problem: Phil puts a 10-in.-long straw into a conical cup filled to the top with root beer (Figure 11-7b). The cup has a top diameter 6 in. and a height 7 in. The root beer has a density of 0.036 lb/in.3. How much work will Phil do in raising all the liquid in the cup to the top of the straw? Figure 11-7b
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