뒤로
문제 78
How many significant figures are in each number? d. 1.563300×1011 m
문제 78c
How many significant figures are in each number? c. 108,700 km
문제 79
Which numbers are exact (and therefore have an unlimited number of significant figures)? a. p = 3.14 b. 12 in = 1 ft c. EPA gas mileage rating of 26 miles per gallon d. 1 gross = 144
문제 79a,c,d
Which numbers are exact (and therefore have an unlimited number of significant figures)? a. π = 3.14 c. EPA gas mileage rating of 26 miles per gallon d. 1 gross = 144
문제 79b
Which numbers are exact (and therefore have an unlimited number of significant figures)? b. 12 in = 1 ft
- Is each number rounded to four significant figures? a. 156.852 b. 156.842 c. 156.849 d. 156.899
문제 81
문제 82
Round each number to three significant figures. a. 79,845.82 b. 1.548937×107 c. 2.3499999995 d. 0.000045389
문제 83
Calculate to the correct number of significant figures. a. 9.15 ÷ 4.970 b. 1.54 × 0.03060 × 0.69 c. 27.5 × 1.82 ÷ 100.04 d. (2.290 × 106) ÷ (6.7 × 104)
문제 84a
Calculate to the correct number of significant figures. a. 89.3 × 77.0 × 0.08
문제 84b
Calculate to the correct number of significant figures. b. (5.01×105) / (7.8×102)
문제 84c
Calculate to the correct number of significant figures. c. 4.005 × 74 × 0.007
문제 84d
Calculate to the correct number of significant figures. d. 453 ÷ 2.031
문제 85
Calculate to the correct number of significant figures. a. 43.7 - 2.341 b. 17.6 + 2.838 + 2.3 + 110.77 c. 19.6 + 58.33 - 4.974 d. 5.99 - 5.572
문제 86
Calculate to the correct number of significant figures. a. 0.004 + 0.09879 b. 1239.3 + 9.73 + 3.42 c. 2.4 - 1.777 d. 532 + 7.3 - 48.523
문제 86a,b,c
Calculate to the correct number of significant figures. a. 0.004 + 0.09879 b. 1239.3 + 9.73 + 3.42 c. 2.4 - 1.777
문제 86d
Calculate to the correct number of significant figures. d. 532 + 7.3 - 48.523
문제 87
Calculate to the correct number of significant figures. a. (24.6681 * 2.38) + 332.58 b. (85.3 - 21.489) , 0.0059 c. (512 , 986.7) + 5.44 d. [(28.7 * 105) , 48.533] + 144.99
문제 88a,b
Calculate to the correct number of significant figures. a. [(1.7×106) / (2.63×105)] + 7.33 b. (568.99 - 232.1) / 5.3
문제 88c
Calculate to the correct number of significant figures. c. (9443 + 45 - 9.9) × 8.1 × 106
문제 88d
Calculate to the correct number of significant figures. d. (3.14 × 2.4367) - 2.34
문제 89
A flask containing 11.7 mL of a liquid weighs 132.8 g with the liquid in the flask and 124.1 g when empty. Calculate the density of the liquid in g/mL to the correct number of significant digits.
문제 91
Perform each unit conversion. a. 27.8 L to cm3 b. 1898 mg to kg c. 198 km to cm
문제 92
Perform each unit conversion. a. 28.9 nm to mm b. 1432 cm3 to L c. 1211 Tm to Gm
문제 93
Perform each unit conversion. a. 154 cm to in b. 3.14 kg to g c. 3.5 L to qt d. 109 mm to in
문제 94a
Perform each unit conversion. a. 1.4 in to mm
문제 94b
Perform each unit conversion. b. 116 ft to cm
문제 94c
Perform each unit conversion. c. 1845 kg to lb
문제 94d
Perform each unit conversion. d. 815 yd to km
문제 95
A runner wants to run 10.0 km. Her running pace is 7.5 mi per hour. How many minutes must she run?
문제 96
A cyclist rides at an average speed of 18 mi per hour. If she wants to bike 212 km, how long (in hours) must she ride?