College Physics: A Strategic Approach, 4th Edition Test Bank

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ExamName___________________________________MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.1)Significant Figures: In the product AÂBÂC,Ahas 5 significant figures,Bhas 2 significant figures,andChas 3 significant figures. How many significant figures does the product have?A)10B)4C)5D)2E)3Answer:D2)Significant Figures: In the quotientABÂC, A has 5 significant figures,Bhas 2 significant figures,andChas 3 significant figures. How many significant figures does the quotient have?A)1B)0C)2D)3E)4Answer:C3)Significant Figures: In the sumA + B + C,Ais accurate to 5 decimal places,Bis accurate to 2decimal places, andCis accurate to 3 decimal places. What is the correct number of decimal placesin the sum?A)4B)3C)10D)2E)5Answer:D4)Significant Figures: In the differenceA - B - C,Ais accurate to 5 decimal places,Bis accurate to 2decimal places, andCis accurate to 3 decimal places. What is the correct number of decimal placesin the difference?A)4B)3C)0D)5E)2Answer:E5)Significant Figures: How many significant figures are in the number 0.0037010?A)sevenB)fiveC)sixD)eightE)fourAnswer:B6)Significant Figures: How many significant figures are in the number 0.010?A)twoB)threeC)oneD)fourAnswer:A7)Significant Figures: How many significant figures are in the number 120.070?A)fiveB)threeC)fourD)sixAnswer:D8)Significant Figures: The number of significant figures in 10,001 isA)five.B)two.C)six.D)three.Answer:A1

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9)Significant Figures: The number of significant figures in 0.01500 isA)four.B)five.C)two.D)three.Answer:A10)Significant Figures: The number of significant figures in 0.040 isA)four.B)one.C)three.D)two.Answer:DSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.11)Significant Figures: Which of the following numbers has 4 significant figures; which has 5 significant figures?(a) 3001(b) 0.00370(c) 4774.00(d) 29.290Answer:(a) has 4 significant figures; (d) has 5 significant figures12)Significant Figures: In a parallel universe, the quantityʌhas the value 3.14049… . Expressʌin that universe to(a) four significant figures(b) five significant figures.Answer:(a) 3.140 (b) 3.1405MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.13)Metric System: The metric system is preferred over the British system in science for the followingmain reason.A)The metric system is more precise than the British system.B)Metric quantities are natural whereas British quantities are invented.C)Metric quantities can be defined more accurately than the quantities in the British system.D)Conversions between metric quantities are especially easy because they are all related byfactors of ten.Answer:D14)Dimensional Analysis: When adding several quantitiesA)the quantities can have any combination of units.B)the quantities must all have exactly the same units.C)the quantities must all be dimensionless.Answer:B15)Dimensional Analysis: When multiplying several quantitiesA)the quantities can have any combination of units.B)the quantities must all have exactly the same units.C)the quantities must all be dimensionless.Answer:A2

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16)Dimensional Analysis: When dividing several quantitiesA)the quantities can have any combination of units.B)the quantities must all have exactly the same units.C)the quantities must all be dimensionless.Answer:A17)Dimensional Analysis: When subtracting several quantitiesA)the quantities can have any combination of units.B)the quantities must all have exactly the same units.C)the quantities must all be dimensionless.Answer:B18)Estimation: A reasonable estimate for the mass of a typical female college student isA)200 kg.B)20 kg.C)150 kg.D)50 kg.Answer:D19)Estimation: A reasonable estimate for the height of an ordinary adult male isA)300 cm.B)200 cm.C)50 cm.D)70 cm.Answer:B20)Estimation: A reasonable estimate for the mass of a typical new-born baby isA)1 kg.B)20 kg.C)3 kg.D)10 kg.Answer:C21)Estimation: A reasonable estimate for the height of the walls in an ordinary American home isA)2.5 m.B)8 m.C)10 m.D)1.5 m.Answer:A22)Estimation: A reasonable estimate for the duration of a typical physics lecture isA)1000 s.B)10,000 s.C)3500 s.D)600 s.Answer:C23)Estimation: A reasonable estimate for the mass of an ordinary passenger car isA)1000 kgB)10,000 kgC)100 kgD)5000 kgAnswer:A24)Significant Figures: What is the product of 12.56 and 2.12 expressed to the correct number ofsignificant figures?A)27B)26.627C)26.6D)26.23Answer:C25)Significant Figures: What is the quotient of 2.43 ÷ 4.561 expressed to the correct number ofsignificant figures?A)5.3 × 10-1B)5.33 × 10-1C)5.3278 × 10-1D)5.328 × 10-1Answer:B3

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26)Significant Figures: What is0.6740.74expressed to the correct number of significant figures?A)0.9108B)0.9C)0.911D)0.91Answer:D27)Significant Figures: What is 0.2052/3, to the correct number of significant figures?A)0.35B)0.3477C)0.3D)0.348Answer:D28)Significant Figures: Add 1299 g and 45.1 kg and express your answer in milligrams (mg) to thecorrect number of significant figures.A)4.64 × 105mgB)4.64 × 106mgC)4.64 × 104mgD)4.64 × 107mgAnswer:DSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.29)Significant Figures: What is4.302(15.6 - 1.2)22.1 + 19.4expressed to the correct number of significantfigures?Answer:1.22MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.30)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 numberof significant figures, the area of the rectangle should be written asA)0.682 m2B)0.68 m2C)0.6818 m2D)0.68175 m2Answer:A31)Significant Figures: What is the sum of 2.67 + 1.976 + 2.1 expressed to the correct number ofsignificant figures?A)6.746B)6.7460C)6.7D)6.75Answer:CSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.32)Significant Figures: Express the sum of 420.77, 13.821, and 2317.8 to the correct number ofsignificant figures.Answer:2752.4MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.33)Significant Figures: What is the difference between 103.5 and 102.24 expressed to the correctnumber of significant figures?A)1.2600B)1.260C)1.3D)1.26Answer:C4

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34)Significant Figures: What is the sum of 1.53 + 2.786 + 3.3 expressed to the correct number ofsignificant figures?A)7.6B)7C)7.616D)7.6160E)7.62Answer:ASHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.35)Significant Figures: Express the result of the following calculation to the proper number ofsignificant figures: 50.19 - 7966 × 10-3.Answer:42.22MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.36)Significant Figures: What is the result, expressed to the proper number of significant figures, ofadding 23.4 to 91.237 and then subtracting 23.4?A)91.3B)91.237C)91D)91.2E)91.0Answer:DSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.37)Significant Figures: Express the result of the following calculation, in scientific notation, to theproper number of significant figures:395600.16.72+ 19.Answer:5.9 × 10438)Significant Figures: Add the following lengths, each obtained from a different measuringinstrument, and round the answer to the proper number of significant figures: 20.02 m, 5.91 m,0.0097 m, and 2.467 m.Answer:28.41 mMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.39)Significant Figures: The last page of a book is numbered 764. The book is 3.0 cm thick, notincluding its covers. What is the average thickness (in centimeters) of a page in the book, rounded tothe proper number of significant figures?A)0.0079 cmB)0.0039 cmC)0.00393 cmD)0.00785 cmE)0.072 cmAnswer:A5

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40)Significant Figures: The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Youcalculate the rectangle's perimeter by adding these numbers and multiplying by two. Yourcalculator's display reads 3.462. To the correct number of significant figures, the perimeter shouldbe written asA)3.46 m.B)3.4620 m.C)3.5 m.D)3.462 m.Answer:D41)Significant Figures: A rectangular garden measures 15 m long and 13.70 m wide. What is the lengthof a diagonal from one corner of the garden to the other?A)19 mB)20 mC)4.1 × 102mD)18 mAnswer:B42)Significant Figures: If a circle has a radius of 1.109 m, what is its area expressed to the correctnumber of significant figures?A)3.86379 m2B)3.8638 m2C)3.86 m2D)3.864 m2E)3.863 m2Answer:D43)Significant Figures: A train travels at a constant speed of 60.4 mi/h for 101.5 min. What distancedoes the train cover expressed to the correct number of significant figures?A)102.2 miB)102.181 miC)100 miD)102.18 miE)102 miAnswer:E44)Significant Figures: A dog has three puppies. Spot weighs 12 ounces. Rascal weighs 9.5 ounces.Socks weighs 10.2 ounces. What is the total weight of the litter expressed to the correct number ofsignificant figures?A)31 ouncesB)30 ouncesC)31.7 ouncesD)32 ouncesE)31.70 ouncesAnswer:D45)Significant Figures: A traveler has about $536 in his checking account, about $2107 in his savingsaccount and exactly $7.62 in his wallet. To the greatest precision warranted, how much money doesthis shopper have?A)$2651B)$2650C)$2650.620D)$2650.62E)$2650.6Answer:A6

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46)Significant Figures: To get to her physics class, Alice walks 0.25 mi to the bus stop. She takes thebus 1.2 mi to the train station. She takes the train 13 mi and walks the remaining 0.17 mi to herclass. How far is her commute expressed to the correct number of significant figures?A)14.62 miB)14.6 miC)15 miD)14.620 miE)10 miAnswer:C47)Significant Figures: What is 56 +32.001.2465 + 3.45written with the correct number of significantfigures?A)63B)62.8123846C)62.812D)62.8E)62.81Answer:A48)Significant Figures: Using a digital balance the mass of a certain piece of wood is read as 12.946 g.Thinking in terms of accuracy and significant figures, what value would you record on your datasheet if the balance is accurate to one-tenth of a gram?A)12.95 gB)12.9 gC)13.0 gD)13 gAnswer:B49)Scientific Notation: Which of the following numbers is thesmallest?A)15 × 10-3B)0.00000015 × 106C)0.00015 × 103D)0.15 × 100Answer:A50)Scientific Notation: Which one of the following numbers is equivalent to the number 0.0001776?A)1.776 × 10-4B)1776 × 10-5C)177.6 × 10-7D)17.76 × 10-3Answer:A51)Scientific Notation: Write out the number 8.42 × 10-5in full with a decimal point and correctnumber of zeros.A)0.000842B)0.00000842C)0.00842D)0.0000842Answer:D52)Scientific Notation: What is the result of the calculation (0.410 + 0.021) × (2.20 × 103)?A)880B)950C)946D)948Answer:D53)Scientific Notation: Express (2.2 × 106)-1/2in scientific notation.A)1.5 × 104B)1.5 × 10-5C)1.5 × 103D)6.7 × 10-4Answer:D7

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54)Metric System: Express the number 13.5 gigameters in meters without using scientific notation.A)135,000,000,000 mB)13,500,000,000 mC)135,000 mD)135,000,000 mAnswer:B55)Metric System: A volume of 100 mL is equivalent to which one of the following volumes?A)1 kLB)0.1 LC)10-6ȝLD)0.01 MLAnswer:B56)Metric System: The volume of a 10-mL test tube is equivalent to which one of the followingquantities?A)0.1 LB)0.001 MLC)0.01 LD)0.001 kLE)1 × 10-6LAnswer:C57)Metric System: The number 0.00325 × 10-8cm can be expressed in millimeters asA)3.25 × 10-10mm.B)3.25 × 10-9mm.C)3.25 × 10-12mm.D)3.25 × 10-11mm.Answer:A58)Metric System: An area of 1.00 × 102cm2is how many square meters?A)1.00 × 102m2B)1.00 × 10-3m2C)1.00 × 10-2m2D)1.00 × 104m2E)1.00 m2Answer:CSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.59)Metric System: The prefix yotta (Y) signifies a multiple of 1024. How many yottameters are there ina gigameter?Answer:10-15ymMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.60)Metric System: Express the sum 1.00 kg + 1531 g + 2.54 × 104mg in kilograms with the correctnumber of significant figures.A)2.56 kgB)2.79 kgC)2.53 kgD)27.9 kgAnswer:A8

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61)Metric System: The quantity 0.00325 × 10-8cm is equivalent toA)3.25 × 10-9mm.B)3.25 × 10-11mm.C)3.25 × 10-10mm.D)3.25 × 10-12mm.E)3.25 × 10-8mm.Answer:C62)Metric System: A weight lifter can bench press 171 kg. How many milligrams is this?A)1.71 × 106mgB)1.71 × 108mgC)1.71 × 107mgD)1.71 × 109mgAnswer:B63)Metric system: How many nanoseconds does it take for a computer to perform one calculation if itperforms 6.7 × 107calculations per second?A)65 nsB)11 nsC)67 nsD)15 nsAnswer:D64)Metric system: A certain CD-ROM disk can store 600 megabytes of information. If an average wordrequires 9.0 bytes of storage, how many words can be stored on one disk?A)2.1 × 107wordsB)2.0 × 109wordsC)6.7 × 107wordsD)5.4 × 109wordsAnswer:C65)Metric system: The wavelength of the light from a certain laser is 0.66 microns, where 1 micron =1.0 × 10-6m.What is this wavelength in nanometers? (1 nm = 10-9m)A)6.6 × 101nmB)6.6 × 103nmC)6.6 × 104nmD)6.6 × 102nmAnswer:D66)Conversion of Units: If you are 5'10'' tall, what is your height in meters? (2.54 cm = 1.00 in.)A)1.6 mB)1.7 mC)1.5 mD)1.8 mAnswer:D67)Conversion of Units: Given that 1.00 in. = 2.54 cm and 1.00 yd = 36.0 in., how many meters are in7.00 yd?A)1.78 × 103mB)6.40 mC)640 mD)36.3 mAnswer:BSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.68)Conversion of Units: Hydraulicists often express rainfall in acre-feet. This is the amount of waterrequired to cover an area of one acre to a depth of one foot. There are 640.0 acres in a square mile,and 5280 feet in one mile. How many cubic feet are there in one acre-foot?Answer:43,560 ft39

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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.69)Conversion of Units: Express 50 mi/h in units of meters per second. (1 mi = 1609 m)A)2.2 m/sB)22 m/sC)45 m/sD)49 m/sAnswer:B70)Conversion of Units: Given that 1.00 in. = 2.54 cm, how many square centimeters are in 1.00 squareinch?A)5.08B)6.45C)1.59D)2.54Answer:B71)Conversion of Units: A plot of land contains 5.8 acres. How many square meters does it contain?(1.0 acre = 43,560 ft2and 2.54 cm = 1.00 in.)A)5.0 × 104m2B)7.0 × 104m2C)2.3 × 104m2D)7.1 × 103m2Answer:CSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.72)Conversion of Units: The density of water is 1.00 g/cm3. What is its density in kg/m3?Answer:1.00 × 103kg/m3MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.73)Conversion of Units: A light-year (ly) is the distance that light travels in one year. The speed of lightis 3.00 × 108m/s. How many miles are there in 1.00 ly? (1.00 mi = 1.609 km and one year is 365.25days.)A)2.87 × 1013miB)5.88 × 1015miC)9.46 × 1012miD)9.46 × 1015miE)5.88 × 1012miAnswer:E74)Conversion of Units: A speed of 60 mi/h is closest to which of the following? (2.54 cm = 1.00 in.)A)30 km/hB)120 m/sC)30 m/sD)60 m/sE)20 m/sAnswer:C75)Conversion of Units: Which of the following speeds isgreatest? (2.54 cm = 1.00 in.)A)10 m/sB)10 km/hC)10 yd/sD)10 ft/sE)10 mi/hAnswer:A76)Conversion of Units: A person on a diet loses 1.6 kg in a week. How many micrograms per second (ȝg/s) are lost?A)1.6 × 105ȝg/sB)2.6 × 103ȝg/sC)44ȝg/sD)6.4 × 104ȝg/sAnswer:B10

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SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.77)Conversion of Units: There are 640 acres in a square mile, 5280 ft in one mile, and 3.28 ft in onemeter. How many acres are there in a hectare, which is a square one hundred meters on each side?Answer:2.47 acres78)Conversion of Units: There are 2.00 dry pints to 1.00 dry quart, 8.00 dry quarts to 1.00 peck, 4.00pecks to 1.00 bushel. An organic farmer wants to pick enough berries to fill 40,000 pint containers.How many bushels of berries does the farmer need?Answer:625 bushelsMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.79)Conversion of Units: A typical ruby-throated hummingbird is 8 cm long. Express its length inmillimeters and micrometers (μm).A)80 mm; 800 μmB)800 mm; 0.8 μmC)800 mm; 0.008 μmD)80 mm; 80,000 μmE)0.8 mm; 8000 μmAnswer:D80)Conversion of Units: A jogger has a mass of 50 kg. Express her mass in grams and micrograms(μg).A)50,000 g; 5 × 1010μgB)500,000 g; 500 × 106μgC)500,000 g; 5000 μgD)50,000 g; 5 × 106μgE)50,000 g; 50,000 μgAnswer:A81)Conversion of Units: A jar of peanut butter costs $3.29. Express its price in dekadollars anddecidollars.A)0.329 dekadollars; 0.329 decidollarsB)32.9 dekadollars; 0.329 decidollarsC)0.329 dekadollars; 32.9 decidollarsD)329 dekadollars; 32.9 decidollarsE)32.9 dekadollars; 329 decidollarsAnswer:C82)Conversion of Units: The following conversion equivalents are given:1.00 gal = 231 in31.0 ft = 12 in 1.0 min = 60 sIf a pipe delivers water at the rate of 95 gal/min, its rate of flow in ft3/s is closest toA)0.19 ft3/s.B)0.14 ft3/s.C)0.21 ft3/s.D)0.17 ft3/s.E)0.15 ft3/s.Answer:C11

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83)Conversion of Units: The following conversion equivalents are given:1.0 m = 100 cm 1.0 in = 2.54 cm 1.0 ft = 12 inIf a bin has a volume of 1.5 m3, the volume of the bin, in ft3, is closest toA)47 ft3.B)59 ft3.C)35 ft3.D)41 ft3.E)53 ft3.Answer:E84)Conversion of Units: The following conversion equivalents are given:1.0 mile = 5280 ft 1.0 ft = 12 in 1 m = 39.37 in1.0 hour = 60 min 1.0 min = 60 sIf a deer runs at 4.7 mi/h, its speed, in meters per second, is closest toA)2.5 m/s.B)2.1 m/s.C)2.3 m/s.D)1.7 m/s.E)1.9 m/s.Answer:B85)Conversion of Units: speed of 65 miles per hour is the same as which of the following? (1.00 ft =30.48 cm)A)29 m/sB)37 m/sC)42 m/sD)32 m/sE)24 m/sAnswer:A86)Conversion of Units: The following conversion equivalents are given:1.0 kg = 1000 g 1.0 l = 1000 cm31.0 l = 0.0353 ft3The density of a certain liquid is 0.83 g/cm3. The density of this liquid, expressed in kg/ft3, is closest toA)24 kg/ft3.B)26 kg/ft3.C)19 kg/ft3.D)28 kg/ft3.E)21 kg/ft3.Answer:A87)Conversion of Units: Your car gets 34.7 mi/gal on a vacation trip in the U.S. If you were figuringyour mileage in Europe, how many km/L did it get? (3.79 L = 1.00 gal; 1.00 mi = 1.61 km)A)55.9 km/LB)9.16 km/LC)14.7 km/LD)32.4 km/LAnswer:C88)Conversion of Units: An oak tree was planted 22 years ago. How many seconds does thiscorrespond to? (Do not take leap days into account.)A)2.8 × 108B)1.2 × 107C)2.9 × 107D)6.9 × 108Answer:D89)Conversion of Units: At a certain time, the average size of a transistor in a microprocessor was 250nanometers. A human hair has a diameter of 70 microns (micrometers). How many transistors fitacross a human hair?A)0.28B)2.8C)28D)280E)2800Answer:D12

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90)Conversion of Units: The king's chamber of the great pyramid in Egypt is 10.43 m long, 5.21 mwide, and 5.82 m high. What is the volume of the chamber in cubic feet, expressed to the correctnumber of significant figures? (1.00 in. = 2.54 cm)A)6530 ft3B)13,200 ft3C)3720 ft3D)316 ft3E)11,200 ft3Answer:E91)Conversion of Units: Rover eats 0.50 pound of dry dog food per day. How many 5.0-kg sacks of dogfood does his owner need to buy in a year? (1.0 kg weighs 2.2 lb)A)80B)25C)81D)52E)17Answer:E92)Conversion of Units: The peak of Mt. Everest, at 10,900 m, is the highest point above sea level inthe world. What is its elevation in miles? (1.00 m = 3.281 ft)A)6.20 miB)6.77 miC)17.6 miD)67.1 miE)0.630 miAnswer:B93)Conversion of Units: The Hope Diamond weighs 44.5 carats, and there are 200 mg per carat. Whatis the mass of the Hope Diamond in kilograms?A)0.0890 kgB)0.00890 kgC)8.90 kgD)0.000890 kgE)0.890 kgAnswer:B94)Conversion of Units: The column of Trajan, erected in Rome in 106-113 A.D., is 125 feet tall. Whatis its height in centimeters? (2.54 cm = 1.00 in.)A)591 cmB)3810 cmC)38,100 cmD)1510 cmE)2520 cmAnswer:B95)Conversion of Units: There are 640 acres in a square mile, and 5280 feet in 1.00 mile. What is thelength in feet (to the nearest foot) of the side of a square having an area of 1.00 acre?A)412 feetB)165 feetC)209 feetD)660 feetE)435 feetAnswer:C96)Conversion of Units: An American football field, including end zones, is 360 feet long and 160 feetwide. If you needed to describe it for someone in Europe using the metric system, which one of thefollowing quantities would be closest to its area in square meters? (2.54 cm = 1.00 in.)A)13,200 m2B)12,100 m2C)88.0 m2D)4920 m2E)5350 m2Answer:E97)Conversion of Units: Leonardo da Vinci'sMona Lisais 21 in. wide and 30.25 in. tall. What is thearea of the painting in square centimeters? (1.00 m = 39.37 in.)A)3300 cm2B)2400 cm2C)4100 cm2D)660 cm2E)1600 cm2Answer:C13

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98)Conversion of Units: A cylindrical drinking glass has a diameter of 2.5 in. and is 5.5 in. tall. What isthe volume of the drinking glass in cubic centimeters? (2.54 cm = 1.00 in.)A)440 cubic cmB)170 cubic cmC)350 cubic cmD)710 cubic cmE)530 cubic cmAnswer:A99)Conversion of Units: A football field is 120 yd long and 50 yd wide. What is the area of the footballfield, in square meters, given that 1.0 yd = 91.44 cm?A)5.0 × 103m2B)2.4 × 103m2C)4.2 × 103m2D)3.7 × 103m2Answer:A100)Conversion of Units: Wall posters are usually sold curled up in cylindrical cardboard tubes. If thelength of the tube is 0.845 m, and the inside diameter of the tube is 2.40 mm, what is the area of theposter expressed in square centimeters to the correct number of significant figures? (Assume theposter is just as long as the tube and does not overlap itself.)A)202.8 cm2B)637.1 cm2C)637 cm2D)319 cm2E)203 cm2Answer:C101)Conversion of Units: A spherical fruit has a radius of 3.23 cm. What is the volume of the fruit incubic meters?A)1.41 × 10-4m3B)4.23 × 10-4m3C)1.41 m3D)4.23 m3Answer:A102)Conversion of Units: A thick-walled metal pipe of length 0.200 m has an inside diameter of 20.0mm and an outside diameter of 2.40 cm. What is thetotalsurface area of the pipe, counting theends, in square centimeters?A)276 cm2B)277 cm2C)279 cm2D)278 cm2Answer:C103)Conversion of Units: The radius of the earth is 3963 mi. Which one of the following numbers isclosest to the surface area of the earth? (1.0 mi = 1609 m)A)2.6 × 1014m2B)4.9 × 107m2C)1.3 × 1014m2D)5.1 × 1014m2Answer:D104)Conversion of Units: A large school district has 300 school buses. If each school bus is used 3.0hours each day, the average speed of the school buses is 15 mi/h, and the fuel economy of the busesis 10 mi/gal. How much does it cost to run these buses for 22 school days if gasoline costs $4.10 agallon?A)$180,000B)$60,000C)$120,000D)$240,000Answer:C14

College Physics: A Strategic Approach, 4th Edition Test Bank - Page 16 preview image

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SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.105)Conversion of Units: A 2.00-qt bottle of soda is on sale for $1.29. What should be the price of a2.00-L bottle of the same soda to yield the same value? (1.00 qt = 0.947 L)Answer:$1.36106)Conversion of Units: In a country where the unit of currency is the Passi, kerosene costs 130 Passiper liter, and one dollar buys 227 Passi. What is the cost of kerosene indollarspergallon? (1.00 gal= 3.79 L)Answer:$2.17 per gallon107)Conversion of Units: The tank of a certain car holds 16 gallons of gasoline. (1.00 gal = 3.785 L)(a) How many liters of gasoline does this tank hold?(b) How many kilometers can the car travel on one tank if it gets 25 miles per gallon?Answer:(a) 61 L (b) 640 kmMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.108)Density: The mass of Mars, 6.40 × 1023kg, is about one-tenth that of Earth, and its radius, 3395km, is about half that of Earth. What is the mean density (mass divided by volume) of Mars inkilograms per cubic meter?A)9.76 × 102kg/m3B)7.81 × 103kg/m3C)3.90 × 103kg/m3D)1.95 × 103kg/m3Answer:C109)Density: The average density of blood is 1.06 × 103kg/m3. If you donate a pint of blood to the RedCross, how many grams of blood have you donated? (2.00 pt = 1.00 qt, 1.00 L = 1000 cm3, 1.00 qt= 0.947 L, and density is mass per unit volume.)A)5020 gB)502 gC)5.02 × 105gD)0.502 gE)5.02 gAnswer:B110)Density: Concrete is sold by the cubic yard. What is the mass, in kilograms, of 1.00 cubic yard ofconcrete that is 5.00 times as dense as water? (1.00 m = 1.094 yd, a cubic meter of water has a massof 1000 kg, and density is mass per unit volume.)A)3820 kgB)8730 kgC)6550 kgD)764 kgE)2420 kgAnswer:A15

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