Chapter 1 HW

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Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.

.105 meters

Suppose that you find the volume of all the oceans to be 1.4*10^9 km^3 in a reference book. To find the mass, you can use the density of water, also found in this reference book, but first you must convert the volume to cubic meters. What is this volume in cubic meters?

1.4*10^18

Suppose that, from measurements in a microscope, you determine that a certain bacterium covers an area of 1.50 micrometers squared. Convert this to square meters.

1.50*10^-12 m^2

In a laboratory, you determine that the density of a certain solid is 5.23*10^-6 kg/mm^3. Convert this density into kilograms per cubic meter. Notice that the units you are trying to eliminate are now in the denominator. The same principle from the previous parts applies: Pick the conversation factor o that the units cancel. The only change is that now the units you wish to cancel must appear in the numerator of the conversion factor.

5230 kg/m^3


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