A professor gives an undergraduate assistant a summer job organizing her lab. On the first day, the assistant comes across three identically shaped cylinders of metal, each having a diameter of 5.19 mm and a length of 7.87 cm. They appear to be made out of Metal o (2-m)- silver 6.30 x 107 copper 5.69 x 107 different metals, but they are not labeled. They are, however, packaged with a table of the conductivities of several metals. The assistant locates a multimeter and uses it to measure aluminum 3.50 x 107 the electrical resistance of each cylinder. tungsten 1.82 x 107 tin 8.70 x 106 Using the measured resistances and the table of conductivities, identify the metal that each cylinder is composed of. titanium 1.80 x 106 Sample 1: R = 428 µ2 Answer Bank Sample 2: R2 = 59.0 µ2 titanium aluminum silver Sample 3: R3 = 204 uS2 соррer tungsten tin

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