Q: Which of the following is the correct conversion factor to change pounds (lb) to kilograms (kg)?

$$1 \text{ kg} = 2.2 \text{ lb}$$

Q: The speed of light is approximately $$3.00 \times 10^8$ \text{ m/s}. $$Convert this speed to yards/week (yd/wk). (Use $$1 \text{ yd} = 0.914 \text{ m}$$ and $$1 \text{ wk} = 604800 \text{ s})$$

$$1.84 \times 10$$^{13}$$ \text{ yd/wk}$$

Question 1

Which of the following is the correct conversion factor to change pounds (lb) to kilograms (kg)?

Accepted Answer

$$1 	ext{ kg} = 2.2 	ext{ lb}$$

Question 2

A car travels 259 km. How many miles did it travel? (Use $$1 	ext{ km} = 0.621 	ext{ mi})$$

Accepted Answer

$$160.8 	ext{ mi}$$

Question 3

You are given a mass of 100 oz. Convert this mass to kilograms. (Use $$1 	ext{ oz} = 28.4 	ext{ g}$$ and $$1 	ext{ kg} = 1000 	ext{ g})$$

Accepted Answer

$$2.84 	ext{ kg}$$

Question 4

A swimming pool contains 500 gallons of water. How many liters is this? (Use $$1 	ext{ gal} = 3.79 	ext{ L})$$

Accepted Answer

$$1895 	ext{ L}$$

Question 5

Which step is NOT part of the recommended process for converting units according to the study material?

Accepted Answer

Estimate the answer before converting

Question 6

A runner completes a distance of 5.0 km. How many centimeters did they run? (Use $$1 	ext{ km} = 1000 	ext{ m}$$ and $$1 	ext{ m} = 100 	ext{ cm})$$

Accepted Answer

$$50,000 	ext{ cm}$$

Question 7

Convert 22 lbs to kilograms using the conversion factor $$1 	ext{ kg} = 2.2 	ext{ lb}. $$What is the correct answer?

Accepted Answer

$$10 	ext{ kg}$$

Question 8

A rectangular plot measures $$100 	ext{ ft} 	imes 100 	ext{ ft}. $$What is the area in $$	ext{m}^2$$? (Use $$1 	ext{ ft} = 0.305 	ext{ m})$$

Accepted Answer

$$930.25 	ext{ m}^2$$

Question 9

The speed of light is approximately $$3.00 	imes 10^8$ 	ext{ m/s}. $$Convert this speed to yards/week (yd/wk). (Use $$1 	ext{ yd} = 0.914 	ext{ m}$$ and $$1 	ext{ wk} = 604800 	ext{ s})$$

Accepted Answer

$$1.84 	imes 10$$^{13}$$ 	ext{ yd/wk}$$

Question 10

If you have a volume of 2 gallons, how many cubic centimeters is this? (Use $$1 	ext{ gal} = 3.79 	ext{ L}$$ and $$1 	ext{ L} = 1000 	ext{ cm}^3)$$

Accepted Answer

$$7580 	ext{ cm}^3$$

Question 11

A scientist needs to convert $$5.0 	ext{ m}^2 to$$ $$	ext{cm}^2. $$What is the correct conversion? (Use $$1 	ext{ m} = 100 	ext{ cm})$$

Accepted Answer

$$50,000 	ext{ cm}^2$$

Question 12

Which of the following is the correct way to handle unit conversions involving exponents, according to the study material?

Accepted Answer

Multiply the conversion factor as many times as the exponent

Question 13

A patient’s mass is measured as 60 kg. What is this mass in pounds? (Use $$1 	ext{ kg} = 2.2 	ext{ lb})$$

Accepted Answer

$$132 	ext{ lb}$$

Question 14

A laboratory sample has a length of 25.4 cm. What is this length in inches? (Use $$1 	ext{ in} = 2.54 	ext{ cm})$$

Accepted Answer

$$10 	ext{ in}$$

Question 15

A rectangular field measures $$100 	ext{ m} 	imes 50 	ext{ m}. $$What is the area in hectares? (Use $$1 	ext{ ha} = 10,000 	ext{ m}^2)$$

Accepted Answer

$$0.5 	ext{ ha}$$

Question 16

A bottle contains 1.06 quarts of liquid. How many liters is this? (Use $$1 	ext{ L} = 1.06 	ext{ qt})$$

Accepted Answer

$$1 	ext{ L}$$

Question 17

A distance of 1 mile is equivalent to how many kilometers? (Use $$1 	ext{ mi} = 1.61 	ext{ km})$$

Accepted Answer

$$1.61 	ext{ km}$$

Question 18

A sample weighs 450 g. How many pounds is this? (Use $$1 	ext{ lb} = 450 	ext{ g})$$

Accepted Answer

$$1 	ext{ lb}$$

Question 19

A tank holds 3.79 liters of water. How many gallons is this? (Use $$1 	ext{ gal} = 3.79 	ext{ L})$$

Accepted Answer

$$1 	ext{ gal}$$

Question 20

A distance of 1 meter is equivalent to how many centimeters?

Accepted Answer

$$100 	ext{ cm}$$

Unit Conversion in Physics: Methods and Practice

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