EBK THINKING LIKE AN ENGINEER
4th Edition
ISBN: 8220103633512
Author: OHLAND
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 17, Problem 11RQ
You are part of an engineering firm on contract with the U.S. Department of Energy’s Energy Efficiency and Renewable Energy task force to develop a program to help consumers measure the efficiency of their home appliances. Your job is to write a program that measures the efficiency of stove-top burners. Before using your program, the consumer will place a pan of room-temperature water on the stove (with + gallon of water), record the initial room temperature in units of degrees Fahrenheit, turn on the burner, and wait for it to boil. When the water begins to boil, the consumer will record the time in units of minutes it takes for the water to boil. Finally, the consumer will look up the power for the burner provided by the manufacturer.
The output of your program should look like the following output, where the highlighted values are example responses typed by the user into your program. Note that your code should line up the energy and power calculations as shown. In addition, your code must display the efficiency as a percentage with one decimal place and must include a percent symbol.
Sample Input/Output
Household Appliance Efficiency Calculator: Stove
Type the initial room temperature of the water [deg E]: 68 Type the time it takes the water to boil [min]: 21 Type the brand name and model of your stove: Krispy 32-Z Type the power of the stove-top burner [W]: 1200
Energy required: 1267909 J
Power used by burner: 1006 W
Burner efficiency for a Krispy 32-Z stove: 83.9
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You are working as an engineer in a bearing systems design company. The flow of
lubricant inside a hydrodynamic bearing (µ = 0.001 kg m¯¹ s¯¹) can be approximated
as a parallel, steady, two-dimensional, incompressible flow between two parallel plates.
The top plate, representing the moving part of the bearing, travels at a constant speed,
U, while the bottom plate remains stationary (Figure Q1). The plates are separated by
a distance of 2h = 1 cm and are W = 20 cm wide. Their length is L = 10 cm. By
applying the above approximations to the Navier-Stokes equations and assuming that
end effects can be neglected, the horizontal velocity profile can be shown to be
U
y = +h
У
2h = 1 cm
1
x1
y=-h
u(y)
=
1 dP
2μ dx
-y² + Ay + B
moving plate
-
U
stationary plate
2
I2
L = 10 cm
Figure Q1: Flow in a hydrodynamic bearing. The plates extend a width, W = 20 cm,
into the page.
(a) By considering the appropriate boundary conditions, show that the constants take
the following forms:
A =
U
2h
U
1 dP…
Question 2
You are an engineer working in the propulsion team for a supersonic civil transport
aircraft driven by a turbojet engine, where you have oversight of the design for the
engine intake and the exhaust nozzle, indicated in Figure Q2a. The turbojet engine can
operate when provided with air flow in the Mach number range, 0.60 to 0.80. You are
asked to analyse a condition where the aircraft is flying at 472 m/s at an altitude of
14,000 m. For all parts of the question, you can assume that the flow path of air through
the engine has a circular cross section.
(a)
normal
shock
472 m/s
A B
(b)
intake
engine
altitude: 14,000 m
D
exhaust nozzle→
exit to
atmosphere
472 m/s
50 m/s
B
diameter: DE = 0.30 m
EX
diameter: DF = 0.66 m
Figure Q2: Propulsion system for a supersonic aircraft.
F
a) When the aircraft is at an altitude of 14,000 m, use the International Standard
Atmosphere in the Module Data Book to state the local air pressure and tempera-
ture. Thus show that the aircraft speed of…
given below:
A rectangular wing with wing twist yields the spanwise circulation distribution
kbV1
roy) = kbv. (2)
where k is a constant, b is the span length and V. is the free-stream velocity. The wing has an
aspect ratio of 4. For all wing sections, the lift curve slope (ag) is 2 and the zero-lift angle of
attack (a=0) is 0.
a. Derive expressions for the downwash (w) and induced angle of attack a distributions
along the span.
b. Derive an expression for the induced drag coefficient.
c. Calculate the span efficiency factor.
d. Calculate the value of k if the wing has a washout and the difference between the
geometric angles of attack of the root (y = 0) and the tip (y = tb/2) is:
a(y = 0) a(y = ±b/2) = /18
Hint: Use the coordinate transformation y = cos (0)
Chapter 17 Solutions
EBK THINKING LIKE AN ENGINEER
Ch. 17.1 - a. Write an input statement to ask for the users...Ch. 17.1 - Prob. 2CCCh. 17.1 - Prob. 3CCCh. 17.1 - Prob. 4CCCh. 17.1 - a. Create an input dialog that asks users for...Ch. 17.2 - Assume that the variable M is stored in the...Ch. 17.2 - Prob. 7CCCh. 17.2 - Prob. 8CCCh. 17.3 - Create a proper plot of the function D = 50 3t...Ch. 17.3 - Comprehension Check 17-1 0 Create a proper plot of...
Ch. 17.3 - Prob. 11CCCh. 17.4 - Prob. 12CCCh. 17.4 - Prob. 13CCCh. 17.4 - Prob. 14CCCh. 17 - Write a MATLAB statement that results in the input...Ch. 17 - You are writing code that is part of a purchasing...Ch. 17 - For each question dialog described below, write a...Ch. 17 - For each input dialog described below, write a...Ch. 17 - For the following questions, assume z = 100/810....Ch. 17 - For the following questions, z = 100/810. Write...Ch. 17 - Assume that the following variables are stored in...Ch. 17 - Assume that a three-element row vector v already...Ch. 17 - The tiles on the space shuttle are constructed to...Ch. 17 - The specific gravity of acetic acid (vinegar) is...Ch. 17 - Write a MATLAB program that will allow a user to...Ch. 17 - Write a program that will allow the user to type a...Ch. 17 - In order to calculate the pressure in a flask,...Ch. 17 - Write a program that will allow the user to type...Ch. 17 - Use a question dialog to determine whether the...Ch. 17 - Write a MATLAB program that will ask users to...Ch. 17 - Write a program that asks a user to enter, one at...Ch. 17 - Joules first law, also known as the Joule effect,...Ch. 17 - Create a proper plot of the following set of...Ch. 17 - There is currently an effort in the United States...Ch. 17 - You want to create a graph showing the theoretical...Ch. 17 - In 1619, Johannes Kepler proposed his third law of...Ch. 17 - The decay of a radioactive isotope can be...Ch. 17 - Create a proper plot of the theoretical voltage...Ch. 17 - Plot the following functions as assigned by your...Ch. 17 - Plot the following functions as assigned by your...Ch. 17 - Prob. 28ICACh. 17 - Enter the following data into MATLAB. Graph the...Ch. 17 - If an object is heated, the temperature of the...Ch. 17 - The resistance of a typical carbon film resistor...Ch. 17 - Today, most traffic lights have a delayed green,...Ch. 17 - Cadmium sulfide (CdS) is a semiconducting material...Ch. 17 - Your supervisor has assigned you the task of...Ch. 17 - Three different diodes were tested: a constant...Ch. 17 - Design a program that will ask the user to enter...Ch. 17 - If a hot liquid in a container is left to cool,...Ch. 17 - You are an engineer working for M M / Mars...Ch. 17 - 1. The specific gravity of gold is 19.3. Write a...Ch. 17 - An unmanned X-43A scramjet test vehicle has...Ch. 17 - A rod on the surface of Jupiter's moon Callisto...Ch. 17 - The Eco-Marathon is an annual competition...Ch. 17 - Your company wishes to write a computer program...Ch. 17 - You are developing a program to record information...Ch. 17 - In a factory, various metal rods are forged and...Ch. 17 - Write a function and program to determine the mass...Ch. 17 - Write a program to calculate a temperature...Ch. 17 - You are part of an engineering firm on contract...Ch. 17 - You want to create a graph showing the...Ch. 17 - When one tries to stop a car, both the reaction...Ch. 17 - If an object is heated, the temperature of the...Ch. 17 - Capillary action draws liquid up a narrow tube...Ch. 17 - In a turbine, a device used for mixing, the power...Ch. 17 - A pilot tube is a device that measures the...Ch. 17 - Prob. 19RQCh. 17 - Download the weekly retail gasoline and diesel...Ch. 17 - A sample of the data provided in the Microsoft...Ch. 17 - An Excel file named DartTosses.xlsx has one...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- ۳/۱ العنوان O не شكا +91x PU + 96852 A heavy car plunges into a lake during an accident and lands at the bottom of the lake on its wheels as shown in figure. The door is 1.2 m high and I m wide, and the top edge of Deine the hadrostatic force on the Plot the displacement diagram for a cam with roller follower of diameter 10 mm. The required motion is as follows; 1- Rising 60 mm in 135° with uniform acceleration and retardation motion. 2- Dwell 90° 3- Falling 60 mm for 135° with Uniform acceleration-retardation motion. Then design the cam profile to give the above displacement diagram if the minimum circle diameter of the cam is 50 mm. = -20125 750 x2.01arrow_forwardPlot the displacement diagram for a cam with roller follower of diameter 10 mm. The required motion is as follows; 1- Rising 60 mm in 135° with uniform acceleration and retardation motion. 2- Dwell 90° 3- Falling 60 mm for 135° with Uniform acceleration-retardation motion. Then design the cam profile to give the above displacement diagram if the minimum circle diameter of the cam is 50 mm.arrow_forwardQ1/ A vertical, circular gate with water on one side as shown. Determine the total resultant force acting on the gate and the location of the center of pressure, use water specific weight 9.81 kN/m³ 1 m 4 marrow_forward
- I need handwritten solution with sketches for eacharrow_forwardGiven answers to be: i) 14.65 kN; 6.16 kN; 8.46 kN ii) 8.63 kN; 9.88 kN iii) Bearing 6315 for B1 & B2, or Bearing 6215 for B1arrow_forward(b) A steel 'hot rolled structural hollow section' column of length 5.75 m, has the cross-section shown in Figure Q.5(b) and supports a load of 750 kN. During service, it is subjected to axial compression loading where one end of the column is effectively restrained in position and direction (fixed) and the other is effectively held in position but not in direction (pinned). i) Given that the steel has a design strength of 275 MN/m², determine the load factor for the structural member based upon the BS5950 design approach using Datasheet Q.5(b). [11] ii) Determine the axial load that can be supported by the column using the Rankine-Gordon formula, given that the yield strength of the material is 280 MN/m² and the constant *a* is 1/30000. [6] 300 600 2-300 mm wide x 5 mm thick plates. Figure Q.5(b) L=5.75m Pinned Fixedarrow_forward
- Q1: For the following force system, find the moments with respect to axes x, y, and zarrow_forwardQ10) Body A weighs 600 lb contact with smooth surfaces at D and E. Determine the tension in the cord and the forces acting on C on member BD, also calculate the reaction at B and F. Cable 6' 3' wwwarrow_forwardHelp ارجو مساعدتي في حل هذا السؤالarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Dimensional Analysis - in physics; Author: Jennifer Cash;https://www.youtube.com/watch?v=c_ZUnEUlTbM;License: Standard youtube license