Thinking Like an Engineer: An Active Learning Approach (4th Edition)
4th Edition
ISBN: 9780134639673
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 5RQ
- 5. You enjoy drinking coffee but are particular about the temperature (T) of your coffee. If the temperature is greater than or equal to 70 degrees Celsius [0C], the coffee is too hot to drink; less than or equal to 45°C is too cold by your standards. Your coffee pot produces coffee at the initial temperature (T0). The cooling of your coffee can be modeled by the following equation, where time (t) and the cooling factor (k) are in units per second:
T = T0e–kt
- a. At the top of the worksheet, create an area where the user can modify four properties of the coffee. For a sample test case, enter the following data.
- Initial temperature (T0); for the initial problem, set to 80°C.
- Cooling factor (k); set to 0.001 per second (s–1].
- Temperature above which coffee is “Too Hot” to drink (Thot); set to 70°C.
- Temperature below which coffee is “Too Cold” to drink (Tcold); set to 45°C.
- b. Create a temperature profile for the coffee:
- In column A, generate a time range of 0–300 seconds, in 15-second intervals.
- In column B, generate the temperature of the coffee, using the equation given and the input parameters set by the user (T0 and k).
- c. In column B, the temperature values should appear on a red background if the coffee is too hot to drink, and a blue background if it is too cold using conditional formatting.
- a. At the top of the worksheet, create an area where the user can modify four properties of the coffee. For a sample test case, enter the following data.
- d. In column C, create a warning next to each temperature that says “Do Not Drink” if the calculated temperature in column B is too hot or too cold in comparison with the temperature values the user enters.
A sample worksheet is shown here for the test case described in part (a).
| Coffee Parameters | ||
| Initial Temperature(T0) | 80 | [°C] |
| Cooling Factor(k) | 0.001 | [1/s] |
| Too Hot Temperature(Thot) | 70 | [°C] |
| Too Cold Temperature (Tcold) | 45 | [°C] |
| Time[S] | Temperature [deg C] | Warning! |
| 0 | 80 | Do not Drink |
| 15 | 79 | Do not Drink |
| 30 | 78 | Do not Drink |
| 45 | 76 | Do not Drink |
| 60 | 75 | Do not Drink |
| 75 | 74 | Do not Drink |
| 90 | 73 | Do not Drink |
| 105 | 72 | Do not Drink |
| 120 | 71 | Do not Drink |
| 135 | 70 | |
| 150 | 69 | |
| 165 | 68 | |
| 180 | 67 |
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Chapter 10 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
Ch. 10.1 - Type 5 in cell E22 and 13 in cell E23; type =E22 +...Ch. 10.1 - Type 45 into cell G22 and =G22 + 10 in cell H22....Ch. 10.1 - Type 40 into cell A28 and =A28 + 10 in cell D28....Ch. 10.1 - Type 40 into cell A28 and =A28 + 5 in cell G28....Ch. 10.2 - Launch a new worksheet. Type the following Excel...Ch. 10.2 - As part of the design of a high-performance...Ch. 10.3 - Evaluate the following expressions. What is the...Ch. 10.3 - Prob. 8CCCh. 10.4 - This is a continuation of the worksheet you...Ch. 10.5 - Prob. 11CC
Ch. 10.6 - In 1980, the Environmental Protection Agency (EPA)...Ch. 10 - A B C D E F 1 2 45 3 meters 4...Ch. 10 - A B C D E F 1 2 45 3 meters 4...Ch. 10 - A B C D E F 1 2 45 3 meters 4...Ch. 10 - A B C D E F 1 2 45 3 meters 4...Ch. 10 - ICA 10-5 The worksheet shown here was designed to...Ch. 10 - The worksheet provided was designed to calculate...Ch. 10 - Some alternate energy technologies, such as wind...Ch. 10 - The worksheet shown was designed to calculate the...Ch. 10 - The worksheet shown was designed to calculate the...Ch. 10 - Refer to the following worksheet. The following...Ch. 10 - Write the output value that would appear in a cell...Ch. 10 - Write the output value that would appear in a cell...Ch. 10 - Refer to the following worksheet. In all...Ch. 10 - Prob. 14ICACh. 10 - A bioengineer conducts clinical trials on...Ch. 10 - Refer to the Worksheet shown, set up to calculate...Ch. 10 - You are interested in analyzing different implant...Ch. 10 - You have a large stock of several values of...Ch. 10 - We accidentally drop a tomato from the balcony of...Ch. 10 - You are interested in calculating the best place...Ch. 10 - 1. A history major of your acquaintance is...Ch. 10 - Prob. 2RQCh. 10 - 3. A phase diagram for carbon and platinum is...Ch. 10 - 4. A simplified phase diagram for cobalt and...Ch. 10 - 5. You enjoy drinking coffee but are particular...Ch. 10 - 6. In the 1950s, a team at Los Alamos National...Ch. 10 - Use the following phase diagram for questions 7...Ch. 10 - Use the following phase diagram for questions 7...Ch. 10 - Use the following phase diagram for questions 9...Ch. 10 - Use the following phase diagram for questions 9...Ch. 10 - 11. When liquid and vapor coexist in a container...Ch. 10 - 12. The ideal gas law assumes that molecules...Ch. 10 - One of the NAE Grand Challenges for Engineering is...Ch. 10 - 15 Create an Excel worksheet that will allow the...Ch. 10 - Prob. 16RQ
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