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- A rectangular airstrip measures 32.30 m by 210 m, with the width measured more accurately than the length. Find the area, taking into account significant figures. (See Section 1.4.)A house is advertised as having 1 420 square feet under roof. What is the area of this house in square meters? (Sec Section 1.5.)The following lengths are given in meters. Use metric prefixes to rewrite them so the numerical value is -3 bigger than one but less than 1000. For example, 7.9 x 107 m can be written as 7.9 mm. a. 1.8 x 106 m = b. 0.068 m = -10 c. 5.7 x 10 m = d. 3.8 x 10¹ m = Submit Question ? ? V ? ? V
- Practice) a. To convert feet (ft) to meters (m), the number of feet should be multiplied by which of the following conversion factors? i. 1 m/3.28 ft ii. 3.28 ft/1 m b. To convert sq.in to sq.ft, the number of sq.in should be multiplied by which of the following conversion factors? i. 144 sq.in/1 sq.ft ii. 1 sq.ft/144 sq.in c. To convert sq.yd to sq.ft, the number of sq.yd should be multiplied by which of the following conversion factors? i. 1 sq.yd/9 sq.ft ii. 9 sq.ft/1 sq.yd 3. (Practice) Determine the final units of the following expression: 9.8m/s2 ×100cm/1m×1in/2.54cm×1ft/12in 4. (Practice) a. Determine the conversion factors that can be used to convert miles per gallon (mpg = mi/gal) to kilometers per liter (km/liter), given that 1 liter = 0.22 gallons and 1 kilometer = 0.6214 miles. b. Using the conversion factors you determined in Exercise 4a, convert 25 mpg into km/liter. 5. (Automotive) a. An automobile engine’s performance can be determined by monitoring its rotations per…A jet airplane reaches 875. km/h on a certain flight. How long does it take to cover 246. m? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols.1. Conversion time! a) Convert 23.8 days to minutes. Use scientific notation. b) Convert 66.0 cm to miles. Use scientific notation
- a. Multiply (1.359 x 109 m) by (2.4 x 10-¹0 m). Express your answer in scientific notation. b. Divide 1.24 x 108 m by 0.00020 sec. Express your answer in scientific notation and by using a prefix.16. How many significant figures are there in 60.5? Express your answer in numbers (1,2,3,4,5, etc.) only and do not type in "sf" "sig fig" or "significant figures" after. Enter your answer 17. How many significant figures are there in 600.0? Express your answer in numbers (1,2,3,4,5, etc.) only and do not type in "sf" "sig fig" or "significant figures" after. Enter your answer1. A square field measuring 100.0 m by 10o.o m has an area of 1.00 hectare. An acre has an area of 43,600 ft?. If a country lot has an area of 12.0 acres, what is the area in hectares? 2. The following conversions occur frequently in physics and are very useful. (a) Use 1 mi = 5280 ft and 1 h= 3600 s to convert 60 mph to units of ft/s. (b) The acceleration of a freely falling object is 32 ft/s?. Use 1 ft = 30.48 cm to express this acceleration in units of m/s2. (c) The density of water is 1.0 g/cm3. Convert this density to units of kg/m³.
- 13. Which of the answers for the following conversions contains the correct answer and the number of significant figures? A) 3.779 x. 454 1,000 mg 1 J6 1.7x10 mg B) 553 a xIL 10' ml -5.5x10 mL 10 L C) 623 ph x 39.4 in -2.45x10 in 10 h D) 623 am x 39.4 in =2,45x10 in 10 am2. A lecture period (50 min) is close to 1 microcentury. (a) How long is a microcentury in minutes? actual – approximation (b) Using percentage difference difference from the approximation find the percentage actualThe volume of a box is 225 cm. Express this volume in the S.I. unit. O a. 0.000225 cubic meter t of O b. 0.00225 cubic meter estion O . 22.50 cubic meter O d. 2.25 cubic meter Clear my choice