54. Perform the following calculations and report each answer with the correct number of significant figures. (a) 62.8 x 34= 2.1 x 10^3 (b) 0.147 + 0.0066 + 0.012 (c) 38 x 95 x 1.792 (d) 15 - 0.15 - 0.6155 (e) 8.78 x (0.0500/0.478) (f) 140 + 7.68 + 0.014 (g) 28.7 -0.0483 (h) (88.5- 87.57)/45.13

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter59: Areas Of Rectangles, Parallelograms, And Trapezoids
Section: Chapter Questions
Problem 79A
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54. Perform the following calculations and report each answer with the correct number of
significant figures.
(a) 62.8 x 34= 2.1 x 10^3
(b) 0.147 + 0.0066 +0.012
(c) 38 x 95 x 1.792
(d) 15 -0.15 -0.6155
(e) 8.78 x (0.0500/0.478)
(f) 140 + 7.68 +0.014
(g) 28.7 -0.0483
(h) (88.5 - 87.57)/45.13
57. Write conversion factors (as ratios) for the number of:
(a) yards in 1 meter
(b) liters in 1 liquid quart
(c) pounds in 1 kilogram
62. A woman's basketball has a circumference between 28.5 and 29.0 inches and a maximum
weight of 20 ounces (two significant figures). What are these specifications in units of
centimeters and grams?
63. How many milliliters of a soft drink are contained in a 12.0-oz can?
64. A barrel of oil is exactly 42 gal. How many liters of oil are in a barrel?
65. The diameter of a red blood cell is about 3 x 10-4 in. What is its diameter in centimeters?
66. The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21
x 10 -8 cm. What is this distance in inches?
67. Is a 197-lb weight lifter light enough to compete in a class limited to those weighing 90 kg
or less?
72. Complete the following conversions between Sl units.
(a) 612g= mg
(b) 8.160 m= cm
(c) 3779 ug= g
(d) 781 ml=
(e) 4.18 kg=
(f) 27.8 m=
(g) 0.13 mL=
(h) 1738 km=
(1) 1.9 Gg=
77. Make the conversion indicated in each of the following:
(a) the length of a soccer field, 120 m (three significant figures), to feet
(b) the height of Mt. Kilimanjaro, at 19,565 ft, the highest mountain in Africa, to kilometers
(c) the area of an 8.5- x 11-inch sheet of paper in cm2
(d) the displacement volume of an automobile engine, 161 in.3, to liters
(e) the estimated mass of the atmosphere, 5.6 x 10 15 tons, to kilograms
(f) the mass of a bushel of rye, 32.0 lb, to kilograms
(g) the mass of a 5.00-grain aspirin tablet to milligrams (1 grain = 0.00229 oz)
km
L
e 3 of 4
1214 words
Focus
112%
Transcribed Image Text:54. Perform the following calculations and report each answer with the correct number of significant figures. (a) 62.8 x 34= 2.1 x 10^3 (b) 0.147 + 0.0066 +0.012 (c) 38 x 95 x 1.792 (d) 15 -0.15 -0.6155 (e) 8.78 x (0.0500/0.478) (f) 140 + 7.68 +0.014 (g) 28.7 -0.0483 (h) (88.5 - 87.57)/45.13 57. Write conversion factors (as ratios) for the number of: (a) yards in 1 meter (b) liters in 1 liquid quart (c) pounds in 1 kilogram 62. A woman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). What are these specifications in units of centimeters and grams? 63. How many milliliters of a soft drink are contained in a 12.0-oz can? 64. A barrel of oil is exactly 42 gal. How many liters of oil are in a barrel? 65. The diameter of a red blood cell is about 3 x 10-4 in. What is its diameter in centimeters? 66. The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10 -8 cm. What is this distance in inches? 67. Is a 197-lb weight lifter light enough to compete in a class limited to those weighing 90 kg or less? 72. Complete the following conversions between Sl units. (a) 612g= mg (b) 8.160 m= cm (c) 3779 ug= g (d) 781 ml= (e) 4.18 kg= (f) 27.8 m= (g) 0.13 mL= (h) 1738 km= (1) 1.9 Gg= 77. Make the conversion indicated in each of the following: (a) the length of a soccer field, 120 m (three significant figures), to feet (b) the height of Mt. Kilimanjaro, at 19,565 ft, the highest mountain in Africa, to kilometers (c) the area of an 8.5- x 11-inch sheet of paper in cm2 (d) the displacement volume of an automobile engine, 161 in.3, to liters (e) the estimated mass of the atmosphere, 5.6 x 10 15 tons, to kilograms (f) the mass of a bushel of rye, 32.0 lb, to kilograms (g) the mass of a 5.00-grain aspirin tablet to milligrams (1 grain = 0.00229 oz) km L e 3 of 4 1214 words Focus 112%
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