(9.8 imes 10^{-3}) / (24 imes 10^{6}) \
((6.2 imes 10^{6})(4.3 imes 10^{-2})) / (20 imes 10^{4}) \
Units: \
Different types of measurements have different units. For example, when measuring a length, you may use inches or meters. When measuring mass, you might use grams or kilograms. And when measuring time, you might use seconds or hours or even years. It is very important to recognize the units you use and also know that there is a way to go from one unit to another for a particular measurement. In order to go from one unit to another, you need to know the proper unit conversion. For instance, you know 60 minutes = 1 hour. That is a unit conversion, it never changes! How do you use this conversion? You begin with a quantity, say 300 minutes and want to know how many hours are in 300 minutes. You are converting from minutes and to hours. To solve this problem, you set it up as follows: \
Given quantity imes (conversion to) / (conversion from) = Answer in desired units \
300 minutes imes (1 hour) / (60 minutes) = 5 hours \
(multiply everything on the top and divide by everything on the bottom) \
Notice the quantities used in the "conversion to" and "conversion from" are obtained from the unit conversion! \
Let's try a few examples: (show your work for full credit) \
31. Convert 500 minutes to hours. \
32. Convert 1.5 hours to minutes. \
33. How many inches are in 100 cm? 1 inch = 2.54 cm \
34. Convert 5000 kg to g (1 kg) = (1000 g) \
Page \
29. 9.810 - 2.4 x 10 \
30. (6210 * 4.3 x 10 - 2 2.0 x 10 \
Units: \
Proper unit conversion. For instance, you know 60 minutes = 1 hour. That is a unit conversion, it never changes! How do you use this conversion? You begin with a quantity, say 300 minutes and want to know how many hours are in 300 minutes. You are converting from minutes and to hours. To solve this problem, you set it up as follows: \
Given quantity x conversion from \
1 hour = 5 hours \
(multiply everything on the top and divide by everything on the bottom) Notice the quantities used in the "conversion to" and "conversion from" are obtained from the unit conversion! Let's try a few examples: (show your work for full credit) \
31. Convert 500 minutes to hours \
32. Convert 1.5 hours to minutes \
33. How many inches are in 100 cm? 1 inch = 2.54 cm \
34. Convert 5000 kg to g (1 kg = 1000 g)