A rod of length 300 cm has linear density mass per length, Ask an Expert

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A rod of length 30.0 cm has linear density (mass per length) given by: ?= 50.0 + 20.0x. Where x is the distance from one end, measured in meters, and ?is in grams/meter.

1. What is the mass of the rod?

2. How far from the x = 0 end is its center of mass?

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