MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1 Estimation: Estimate the number of times the earth will rotate on its axis during a humans lifetime. 1 A 3 10 7 B 3 10 4 C 3 10 6 D 3 10 8 E 3 10

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Estimation: Estimate the number of times the earth will rotate on its axis during a human's lifetime. 1) A) 3 × 10 7 B) 3 × 10 4 C) 3 × 10 6 D) 3 × 10 8 E) 3 × 10 5 2) Estimation: Approximately how many pennies would you have to stack to reach an average 8-foot ceiling? 2) A) 2 × 10 4 B) 2 × 10 3 C) 2 × 10 5 D) 2 × 10 6 E) 2 × 10 2 3) Scientific notation: 0.00325 × 10 -8 cm can also be expressed in mm as 3) A) 3.25 × 10 -12 mm. B) 3.25 × 10 -11 mm. C) 3.25 × 10 -8 mm. D) 3.25 × 10 -10 mm. E) 3.25 × 10 -9 mm. 4) Significant figures: Add 3685 g and 66.8 kg and express your answer in milligrams (mg). 4) A) 7.05 × 10 4 mg B) 7.05 × 10 6 mg C) 7.05 × 10 7 mg D) 7.05 × 10 5 mg 5) Estimation: The mass of a typical adult woman is closest to 5) A) 150 kg. B) 35 kg. C) 20 kg. D) 75 kg. 6) Metric system: Scientists use the metric system chiefly because it is more accurate than the English system. 6) A) True B) False 7) Significant figures: What is the product of 11.24 and 1.95 written with the correct number of significant figures? 7) A) 22 B) 21.9 C) 21.92 D) 21.918 E) 21.9180 8) Estimation: The height of the ceiling in a typical home, apartment, or dorm room is closest to 8) A) 400 cm. B) 100 cm. C) 500 cm. D) 200 cm. 1 Physics for Scientists & Engineers with Modern Physics (Volume 1) 5e (Global Edition) By Douglas C. Giancoli ( Test Bank All Chapters, 100% Original Verified, A+ G rade) (Chapters 1-20) Answers At The End Of Each Chapter Chapter 1 1 / 4

9) Estimation: Approximately how many times does an average human heart beat in a lifetime? 9) A) 3 × 10 9 B) 3 × 10 8 C) 3 × 10 11 D) 3 × 10 7 E) 3 × 10 10 10) Conversion of units: If a woman weighs 125 lb, her mass expressed in kilograms is x kg, where x is 10) A) less than 125. B) greater than 125. 11) Significant figures: What is the sum of 1.53 + 2.786 + 3.3 written with the correct number of significant figures? 11) A) 8 B) 7.6 C) 7.62 D) 7.616 E) 7.6160 12) Conversion of units: A plot of land contains 5.8 acres. How many square meters does it contain? [1 acre = 43,560 ft 2 ] 12) A) 7.1 × 10 3 m 2 B) 2.3 × 10 4 m 2 C) 7.0 × 10 4 m 2 D) 5.0 × 10 4 m 2 13) Conversion of units: If a flower is 6.5 cm wide, its width expressed in millimeters is x mm, where x is 13) A) less than 6.5. B) greater than 6.5. 14) Significant figures: What is the result of 1.58 ÷ 3.793 written with the correct number of significant figures? 14) A) 4.17 × 10 -1 B) 4.2 × 10 -1 C) 4.1656 × 10 -1 D) 4.166 × 10 -1 E) 4 × 10 -1 15) Significant figures: What is 34 + ( 3 ) × (1.2465) written with the correct number of significant figures? 15) A) 38 B) 4 × 10 1 C) 37.7395 D) 37.7 E) 37.74 16) Conversion of units: If an operatic aria lasts for 5.75 min, its length expressed in seconds is x s, where x is 16) A) greater than 5.75. B) less than 5.75. 17) Conversion of units: A weight lifter can bench press 171 kg. How many milligrams (mg) is this? 17) A) 1.71 × 10 8 mg B) 1.71 × 10 9 mg C) 1.71 × 10 7 mg D) 1.71 × 10 6 mg 2 2 / 4

18) Conversion of units: A certain CD-ROM disk can store approximately 6.0 × 10 2 megabytes of information, where 10 6 bytes = 1 megabyte. If an average word requires 9.0 bytes of storage, how many words can be stored on one disk? 18) A) 6.7 × 10 7 words B) 2.0 × 10 9 words C) 2.1 × 10 7 words D) 5.4 × 10 9 words 19) Metric system: The current definition of the standard kilogram of mass is based on 19) A) the mass of the earth. B) the mass of a cesium-133 atom. C) the mass of the sun. D) the mass a particular object kept in France. 20) Conversion of units: The following exact conversion equivalents are given: 1 m = 100 cm, 1 in = 2.54 cm, and 1 ft = 12 in. If a computer screen has an area of 1.27 ft 2 , this area is closest to 20) A) 0.118 m 2 . B) 0.284 m 2 . C) 0.00284 m 2 . D) 0.0465 m 2 . E) 4.65 m 2 . 21) Significant figures: The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area should be written as 21) A) 0.6818 m 2 . B) 0.7 m 2 . C) 0.68 m 2 . D) 0.682 m 2 . E) 0.68175 m 2 . 22) Significant figures: What is the value of Œ(8.104) 2 , written with the correct number of significant figures? 22) A) 206.3 B) 200 C) 206.323 D) 206 E) 206.324 23) Metric system: The current definition of the standard second of time is based on 23) A) the duration of one year. B) the frequency of radiation emitted by cesium atoms. C) the oscillation of a particular pendulum kept in France. D) the earth's rotation rate. 3 3 / 4

24) Scientific notation: Write out the number 7.35 × 10 -5 in full with a decimal point and correct number of zeros. 24) A) 0.00000735 B) 0.0000735 C) 0.000735 D) 0.00735 E) 0.0735 25) Dimensional analysis: The period of a pendulum is the time it takes the pendulum to swing back and forth once. If the only dimensional quantities that the period depends on are the acceleration of gravity, g , and the length of the pendulum, � , what combination of g and � must the period be proportional to? (Acceleration has SI units of m  s -2 .). 25) A) g � B) g � C) �/ g D) g � E) g � 2 26) Conversion of units: How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 × 10 7 calculations per second? 26) A) 67 ns B) 65 ns C) 15 ns D) 11 ns 27) Conversion of units: A person on a diet loses 1.6 kg in a week. How many micrograms/second ( g/s) are lost? 27) A) 6.4 × 10 4 g/s B) 44 g/s C) 1.6 × 10 5 g/s D) 2.6 × 10 3 g/s 28) Significant figures: The number 0.003010 has 28) A) 2 significant figures. B) 6 significant figures. C) 7 significant figures. D) 4 significant figures. 29) Significant figures: What is 56 + (32.00)/(1.2465 + 3.45) written with the correct number of significant figures? 29) A) 63 B) 62.81 C) 62.812 D) 62.8123846 E) 62.8 30) Conversion of units: The wavelength of a certain laser is 0.35 micrometers, where 1 micrometer = 1 × 10 -6 m. Express this wavelength in nanometers. 30) A) 3.5 × 10 3 nm B) 3.5 × 10 4 nm C) 3.5 × 10 1 nm D) 3.5 × 10 2 nm 4

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