Physics 221 Worksheet: Chapter 1 #1, Metric Multipliers

1)   There are __ millimeters in a meter.

a)  0.001

b)  0.01

c)  0.1

d)  10

e)  100

f)  1000

2)   There are __ grams in a kilogram.

a)  0.001

b)  0.01

c)  0.1

d)  10

e)  100

f)  1000

3)   There are __ kilometers in a meter.

a)  0.001

b)  0.01

c)  0.1

d)  10

e)  100

f)  1000

4)   There are __ m in a cm.

a)  0.001

b)  0.01

c)  0.1

d)  10

e)  100

f)  1000

 

5)     There are __ cm in a km.

a)  0.00001

b)  0.0001

c)  0.001

d)  1000

e)  10000

f)  100000

6)     There are __ cm in a mm.

a)  0.001

b)  0.01

c)  0.1

d)  10

e)  100

f)  1000

 

Ans: 1-f, 2-f, 3-a, 4-b, 5-f, 6-c

 

Physics 221 Worksheet: Chapter 1 #2, Metric Units

1)     The metric prefix that means 10-3 is:

a)  centi

b)  milli

c)  micro

d)  kilo

e)  mega

2)     The metric prefix that means 103 is:

a)  centi

b)  milli

c)  micro

d)  kilo

e)  mega

3)     The metric prefix that means 106 is:

a)  centi

b)  milli

c)  micro

d)  kilo

e)  mega

4)     The metric prefix that means 10-6 is:

a)  centi

b)  milli

c)  micro

d)  kilo

e)  mega

5)     Convert 21.3 cm into meters.

a)  0.0213 m

b)  0 .213 m

c)  2.13m

d)  2130 m

6)     Convert 625 mg into mg.

a)  625000000 mg

b)  625000 mg

c)  0.625 mg

d)  0.000625 mg

7)     Convert 182 km into cm.

a)  18200 cm

b)  18200000 cm

c)  0.182 cm

d)  0.00182 cm

8)     Show each step in the conversion of 76 km/hr into m/s.                                    

            76 km/hr (________)(________) =   ?     m/s

 

Ans: 1-b, 2-d, 3-e, 4-c, 5-b, 6-c. 7-b, 8) 21 m/s

 

Physics 221 Worksheet: Chapter 1 #3, Numbers

Part 1) The Scale of Things

1)  Which of the following best represents the mass of a human adult?

a)  1 kg

b)  10 kg

c)  100 kg

d)  1000 kg

2)  Which of the following best represents the height of a human adult?

a)  0.1 m

b)  1.0 m

c)  10 m

d)  100 m

3)  A billionaire makes some very bad investments and looses 99% of his money. Which of the following statements best describes his resulting situation?

a)  He is now very poor, essentially broke. He needs a job immediately if he wants to eat.

b)  He is not broke, but he better find a job soon if  he wants to keep on living well.

c)  He is still incredibly wealthy.

4)  You are offered this choice: Either take a million dollars in cash or the following: Take a penny on the first day of the month, 2 cents the next day, 4 cents the day after that, 8 cents a day later, and so on for each day of the month. Which is best for you?

a)  Take the million dollars.

b)  Take the pennies.

 

Ans:1-c, 2-b, 3) Calculate 1% of one billion dollars,  4) Think of this: 1 + 2 + 4 + 8 + $$$ (thirty times) = 20 + 21 + 22 + 23 +  $$$ (thirty times) +230 = ? Calculate 230  

Part 2) Significant Figures

1)     Give the number of significant figures in each of the following values.

a)  10.2          _________

b)  0.012        _________

c)  37.004       _________

d)  60            _________

e)  60.           _________

f)  60.0          _________

g)  0.000101   _________

2)     The value 942.5 implies accuracy to one part per:

a)  hundred

b)  thousand

c)  ten thousand

d)  hundred thousand

3)     Which of the following is the larger relative error?

a)  An error of one pound in the measurement of your weight.

b)  An error of one inch in the measurement of your height.

4)     Measurements give the following data: Mass = 82 g, Volume = 16.45 cm3  . The density is:

a)  4.98480243 g/cm3 

b)  4.985 g/cm3

c)  4.98 g/cm3

d)  5.0 g/cm3

e)  5 g/cm3

 

Ans : 1a) 3, (b) 2, (c) 5, (d) 1 ?, (e) 2, (f) 3, (g) 3 ; 2) c ; 3) b; 4) d