3. A sheet of standard U.S. typing paper measures 8.50 inches x 11.0 inches. What is the area of this sheet of paper in cm2?
\(\left[8.50\ in\ \left(\frac{2.54\ cm}{in}\right)\right]\ \cdot\left[11.0\ in\left(\frac{2.54\ cm}{in}\right)\right]\ =603\ cm^2\)
4. One of the oldest elephants on record lived for 130 years. How many minutes is that? (Use 1 yr = 365 days).
\(130\ yr\cdot\frac{265\ day}{yr}\cdot\frac{24\ hr}{day}\cdot\frac{60\min}{hr}=6.8\cdot10^7\ \min\)
5. How many gallons of soft drink are there in a 2.0 L bottle?
\(2.0\ L\cdot\frac{gal}{3.785\ L}=0.53\ gal\)
6. What mass of cereal in kilograms is in a 40.0 oz box?
\(40.0\ oz\cdot\frac{lb}{16\ oz}\cdot\frac{0.4536\ kg}{lb}=1.13\ kg\)
7. A diamond is made of pure carbon. The distance between any two neighboring carbon atoms in a diamond is 1.54 angstroms (Å). What is this distance in inches?
8. If an audiotape playing at a speed of 1.875 inch s-1 takes 45.0 minutes to play through one side, what is the length of the tape in feet? In meters?
9. The speed limit on many Australian highways is 100 km hr-1. Convert this to mi hr-1 (Round to the nearest whole number).
10. What is the volume in mL of 1.00 pt of heavy cream?
11. The average density of whole milk is 1.034 g cm-3. What is its density in lb gal-1?
12. It is 475 miles between Provo, UT and Las Vegas, NV. What is this distance in km?
13. The legendary racehorse Secretariat won the 1973 Kentucky Derby with a time of 1 min, 59.4 sec. The course is 1.25 mi long. Calculate the horse’s average speed in mi hr-1.
14. The density of water at room temperature (25 ̊C) is 0.9970 g cm-3. How many pounds does the water in a full 5.00 gal pail weigh?
15. If the barometric pressure on a mountain top in Colorado is 521 mm of mercury, what is the pressure in inches of Hg? In atmospheres? In Pascals?
16. If an oxygen molecule is moving at 4.78 x 10-4 cm s-1, what is its speed in mi hr-1?
17. Light in a vacuum travels at a speed of 3.00 x 108 m s-1. Pluto’s average distance from the Sun is 3.6 billion miles. How many minutes does it take sunlight to reach Pluto?
18. The temperature of a oxyacetylene torch flame can reach as high as 3,137 ̊C. What is this temperature in ̊F?
19. If the gasoline in a full 20.9 gallon tank weighs 116 lb, what is the density of gasoline in g mL-1?
20. Dry sand has a density of 1.5 g cm-3 A child’s sandbox, measuring 40 ft by 4.0 ft, is filled with sand to a depth of 6.0 in. What is the mass of the sand in kg? In lb?
21. The hottest temperature yet recorded in Phoenix, Arizona, was 122 ̊F on June 26, 1990. What is the temperature in ̊C? In K?
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