Chapter 1: Introduction to the Engineering Profession
1.20 Estimate the amount of copy or printing paper that you use every year. A 500-sheet ream
of copy paper has an approximate mass of 5 pounds (2.27 kg). How much of this
consumption is truly necessary, and how much of your own paper consumption could be
avoided? State your assumptions.
SOLUTION
For example, on average, I use 15 pages per day; then on a yearly basis, I use 5475 pages
(15 x 365).
5475 pages 5 pounds pounds of paper
( )( ) = 54.75
year 500 pages year
- Print only when necessary; convert online articles, emails; online receipts, etc. to PDF
and save them electronically. Submit reports electronically when appropriate.
- Print on both sides of the paper.
1
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or
in part.
, 2
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or
in part.
, Chapter 4: Engineering Communication
4.14 Plot the following data. Use two different y-axes. Use a scale of zero to 100°F for
temperature, and zero to 12 mph for wind speed. Present your work using the
ideas discussed in this chapter and engineering papers.
Time (p.m.) Temperature (°F) Wind Speed (mph)
1 75 4
2 80 5
3 82 8
4 82 5
5 78 5
6 75 4
7 70 3
8 68 3
SOLUTION
90 9
80 8
70 7
60 6
Wind Speed (mph)
Temperature (F)
50 5
Temperature (F)
40 Wind Speed (mph) 4
30 3
20 2
10 1
0 0
0 1 2 3 4 5 6 7 8
Time (p.m.)
Figure 4-14 Plot of temperature and wind speed as a function of time
3
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
, 4. 15 Create a table that shows the relationship between the units of temperature in
degree Celsius and Fahrenheit in the range of -50° to 50°C. Use Increments of
10°C. Present your work using the ideas discussed in this chapter and engineering
paper.
SOLUTION
The relationship between the units of temperature in degrees Celsius and Fahrenheit
Temperature (°C) Temperature (°F)
-50 -58
-45 -49
-40 -40
-35 -31
-30 -22
-25 -13
-20 -4
-15 5
-10 14
-5 23
0 32
5 41
10 50
15 59
20 68
25 77
30 86
35 95
40 104
45 113
50 122
4.16 Create a table that shows the relationship between the units of mass in kilogram
and pound mass in the range of 50 kg to 120 kg. Use increments of 10 kg. Present
your work using the ideas discussed in this chapter and engineering paper.
4
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
1.20 Estimate the amount of copy or printing paper that you use every year. A 500-sheet ream
of copy paper has an approximate mass of 5 pounds (2.27 kg). How much of this
consumption is truly necessary, and how much of your own paper consumption could be
avoided? State your assumptions.
SOLUTION
For example, on average, I use 15 pages per day; then on a yearly basis, I use 5475 pages
(15 x 365).
5475 pages 5 pounds pounds of paper
( )( ) = 54.75
year 500 pages year
- Print only when necessary; convert online articles, emails; online receipts, etc. to PDF
and save them electronically. Submit reports electronically when appropriate.
- Print on both sides of the paper.
1
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or
in part.
, 2
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or
in part.
, Chapter 4: Engineering Communication
4.14 Plot the following data. Use two different y-axes. Use a scale of zero to 100°F for
temperature, and zero to 12 mph for wind speed. Present your work using the
ideas discussed in this chapter and engineering papers.
Time (p.m.) Temperature (°F) Wind Speed (mph)
1 75 4
2 80 5
3 82 8
4 82 5
5 78 5
6 75 4
7 70 3
8 68 3
SOLUTION
90 9
80 8
70 7
60 6
Wind Speed (mph)
Temperature (F)
50 5
Temperature (F)
40 Wind Speed (mph) 4
30 3
20 2
10 1
0 0
0 1 2 3 4 5 6 7 8
Time (p.m.)
Figure 4-14 Plot of temperature and wind speed as a function of time
3
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
, 4. 15 Create a table that shows the relationship between the units of temperature in
degree Celsius and Fahrenheit in the range of -50° to 50°C. Use Increments of
10°C. Present your work using the ideas discussed in this chapter and engineering
paper.
SOLUTION
The relationship between the units of temperature in degrees Celsius and Fahrenheit
Temperature (°C) Temperature (°F)
-50 -58
-45 -49
-40 -40
-35 -31
-30 -22
-25 -13
-20 -4
-15 5
-10 14
-5 23
0 32
5 41
10 50
15 59
20 68
25 77
30 86
35 95
40 104
45 113
50 122
4.16 Create a table that shows the relationship between the units of mass in kilogram
and pound mass in the range of 50 kg to 120 kg. Use increments of 10 kg. Present
your work using the ideas discussed in this chapter and engineering paper.
4
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
