Posted by **Gabriella** on Monday, October 22, 2012 at 9:15am.

:'( Please help me....?

(7 points)

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.

Answer:

(11 points)

3. A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of 2.16 microns in 5.0 seconds. The biologist wished to compare the speed of the bacteria with other animals, but the speeds of other animals are listed in kilometers per hour. What is the speed of the bacterium in kilometers per hour? (1 micron = 1 x 10–6 m) Use scientific notation and express your answer to the correct number of significant figures.

You must show your work for full credit.

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