46. A tube has a length of 0.015 m and a cross-sectional area of 7.0 31024 m2 . The tube is fi lled with a solution of sucrose in water. The diffusion constant of sucrose in water is 5.0 3 10210 m2 /s. A diff erence in concentration of 3.0 3 1023 kg/m3 is maintained between the ends ofthe tube. How much time is required for 8.0 3 10213 kg of sucrose to betransported through the tube?

College Physics
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Chapter1: Units, Trigonometry. And Vectors
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46. A tube has a length of 0.015 m and a cross-sectional area of 7.0 3
1024 m2 . The tube is fi lled with a solution of sucrose in water. The diffusion constant of sucrose in water is 5.0 3 10210 m2 /s. A diff erence in concentration of 3.0 3 1023 kg/m3 is maintained between the ends of
the tube. How much time is required for 8.0 3 10213 kg of sucrose to be
transported through the tube?

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