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Chapter 1: Problem 44
In Major League baseball, the pitcher delivers his pitches from a distance of 60 feet, 6 inches from home plate. What is the distance in meters?
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1.6 A hockey puck, whose diameter is approximately 3 inches, is to be used to determine the value of \(\pi\) to three significant figures by carefully measuring its diameter and its circumference. For this calculation to be done properly, the measurements must be made to the nearest _____________. a) hundredth of a \(\mathrm{mm}\) c) \(\mathrm{mm}\) e) in b) tenth of a \(\mathrm{mm}\) d) \(\mathrm{cm}\)
The distance from the center of the Moon to the center of the Earth ranges from approximately \(356,000 \mathrm{~km}\) to \(407,000 \mathrm{~km}\). What are these distances in miles? Be certain to round your answers to the appropriate number of significant figures.
A friend walks away from you a distance of \(550 \mathrm{~m}\), and then turns (as if on a dime) an unknown angle, and walks an additional \(178 \mathrm{~m}\) in the new direction. You use a laser range-finder to find out that his final distance from you is \(432 \mathrm{~m} .\) What is the angle between his initial departure direction and the direction to his final location? Through what angle did he turn? (There are two possibilities.)
Since the British system of units is more familiar to most people in the United States, why is the international (SI) system of units used for scientific work in the United States?
What is the number of carbon atoms in 0.5 nanomoles of carbon? One mole contains \(6.02 \cdot 10^{23}\) atoms. a) \(3.2 \cdot 10^{14}\) atoms d) \(3.2 \cdot 10^{17}\) atoms b) \(3.19 \cdot 10^{14}\) atoms e) \(3.19 \cdot 10^{17}\) atoms c) \(3 . \cdot 10^{14}\) atoms f) \(3 . \cdot 10^{17}\) atoms
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