How much heavier is a grain of rice than a strand of hair? Express your answer in scientific notation.(1 point)
Based on average measurements, a grain of rice weighs about 0.02 grams, while a strand of hair weighs about 0.0001 grams.
In scientific notation, the weight of a grain of rice is 2 x 10^-2 grams, and the weight of a strand of hair is 1 x 10^-4 grams.
Therefore, the grain of rice is (2 x 10^-2)/(1 x 10^-4) = 2 x 10^2 times heavier than a strand of hair.