Dimensional Analysis

Question 1

39.00 inches equals to _____ centimeters.
a
133.5

b
67.2

c
99.06

d
106.51

Answer 1

99.06

Question 2

One watt is equal to _____ joule(s) per second.

Answer 2

1

Question 3

8,368 hectares is equal to _____ square kilometers.

Answer 3

83.68

Question 4

A man weighs 235.0 lbs. What is his weight in kg?

Answer 4

106.7

Question 5

How many minutes are there in 3,417 seconds?

Answer 5

56.95

Question 6

A train is traveling at 50.0 miles per hour. 1 mile is equal to 1.61 kilometers. How fast is the train moving in meters per second?

___ m/s

Answer 6

22.4, 22.36, 22.36 m/s(any of these)

Question 7

If on average you inhale once every three seconds exactly, how many times do you inhale in a 24-hour day?

___ inhales/day

Answer 7

28800

Question 8

1.000 mile is equal to 1609 meters. A truck is traveling at 42.00 km/h. What is the speed of the truck in miles per hour?

___ mile/h.

Answer 8

26.10, 26.10 mile/h, 26(any of these)

Question 9

Given 1 in = 2.54 cm, how many centimeters are in a foot? (Write your answer 3 significant figures. e.g. : 25.4)

___ cm

Answer 9

30.5, 30.48(any of these)

Question 10

Given 1 in = 2.54 cm, how many centimeters are in an average hand (9.50 inches)?

___ cm (3 Significant figures)

Answer 10

24.1

Question 11

If Maria winks exactly 5 times every minute while she is awake and she sleeps exactly 8 hours a day, how many times does Maria wink in a day?

___ winks/day.

Answer 11

4800

Question 12

Imagine a new unit of volume as MARIA. Given that 1.00 MARIA = 2.34 L, how many liters equal 13.5 MARIA? Round your answer to the nearest tenth.

___ liters.

Answer 12

31.6

Question 13

A turtle moves at a speed of 1.0 km/h. How fast is the turtle moving in meters per second (m/s)?

Answer 13

0.28 m/s

Question 14

How many meters are in 3.7 km?

Answer 14

3700 m

Question 15

Which of the following is NOT a valid conversion factor?

Answer 15

12 hours/ 1 days

Question 16

What is the term for a ratio of equivalent measurements that can be used to change a value from one unit into another?

Answer 16

Conversion Factor

Question 17

Which two conversion factors would be used to convert the quantity of 4500 seconds into hours?

Answer 17

(1 min/60s) (1 hr/60 min)

Question 18

1 mile is equal to _____ yards.

Answer 18

1760

Question 19

Dimensional analysis is a technique which involves the study of the dimensions of physical quantities.

Answer 19

True

Question 20

A conversion factor is a factor used to convert one unit of measurement into another unit.

Answer 20

True

Question 21

A technique that uses the units of the measurement in order to correctly solve problems is conversion factor.

Answer 21

False

Question 22

Unit conversion is not a part of dimensional analysis.

Answer 22

False