Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
3rd Edition
ISBN: 9780133593211
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
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Chapter 18, Problem 12ICA
Write a program that will allow the user to type the input power of a motor in watts, the mass of an object in kilograms, the height to which the object will be raised by the motor in meters, and the time it took to raise the object in seconds. Use this information to determine the efficiency of the motor. Display the calculated value in the Command Window in the following format, using one decimal place: “The motor is __% efficient.”
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2. Complete the table. This problem involves the power required to raise a mass a given distance in a given amount of time. (Round your answers for mass and energy
to the nearest whole number.)
(Round your answers for power to two decimal places.)
3
Click the icon to view the table to complete.
4 Click the icon to view the conversion table.
5 Click the icon to view the table of common derived units in the Sl system.
3: More Info
4: More Info
2
11
Q
W
(a)
(b)
(a)
(b)
Mass [bm]
220
Time
1 d = 24 h
1 h = 60 min
Mass [Ibm
1 min = 60 s
3
1 yr = 365 d
E
220
$
4
Distance [ft]
1 kg =
1 slug = 14.5939 kg
1 slug = 32.2 lbm
15
Distance [ft]
15
35
Mass
2.205 lbm
I
R
35
%
5
I
T
Energy [J]
Length
1 m = 3.28 ft
1 km = 0.621 mi
1 in = 2.54 cm
1 mi = 5,280 ft
Energy [J]
^
6
MacBook Pro
Y
&
7
Time [min]
Energy
1 J = 0.239 cal
= 9.48 x 10-4 BTU
= 0.7376 ft lbf
1 kWh 3,600,000 J
H
0.5
Time [min]
0.5
2
2
8
1
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20
Power [hp]
0.134
Power [hp]
0.134
Power
1 W 3.412 BTU/h
= 0.00134 hp
= 14.34 cal/min
= 0.7376…
For Questions 3 and 4: A cup of water was heated to a
temperature of 90°. It was placed in a refrigerator that had a
temperature of 11°C. The water cooled to a temperature of
17°C in 30 minutes. Let the following variables represent
the relevant quantities.
L = Temperature of the liquid
S= Temperature of the surroundings
t = Time
B = Initial temperature of the liquid (Temperature at t = 0
k = Cooling constant
3. Using the Equation Solver, find the value of k in the
equation L = (B - S)e -kt + S. Remember to set the
equation equal to zero and then enter it into the Solver.
Posted below is a picture of a data table and a diagram of an experiment. In the experiment you rolled a marble down a ruler ramp off the end of a coffee table to observe projectiles and conservation of energy. You do 3 trials for each initial height. Each height is measured in meters.
h= initial height of marble off of table
Y= height of table off floor
X= horizontal distance marble goes from edge of table to where it strikes the floor
a) use the table to find information you need to solve for theoretical range and % of error in measured range.
Chapter 18 Solutions
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
Ch. 18.1 - a. Write an input statement to ask for the users...Ch. 18.1 - Prob. 2CCCh. 18.1 - Prob. 3CCCh. 18.2 - Assume that the variable M is stored in the...Ch. 18.2 - Prob. 5CCCh. 18 - Write a MATLAB statement that results in the input...Ch. 18 - You are writing code that is part of a purchasing...Ch. 18 - Prob. 3ICACh. 18 - Prob. 4ICACh. 18 - Prob. 5ICA
Ch. 18 - Assume that a three-element row vector v already...Ch. 18 - The tiles on the space shuttle are constructed to...Ch. 18 - The specific gravity of acetic acid (vinegar) is...Ch. 18 - Write a MATLAB program that will allow a user to...Ch. 18 - Write a program that will allow the user to type a...Ch. 18 - In order to calculate the pressure in a flask,...Ch. 18 - Write a program that will allow the user to type...Ch. 18 - Write a MATLAB program that will ask users to...Ch. 18 - Write a program that asks a user to enter, one at...Ch. 18 - Joules first law, also known as the Joule effect,...Ch. 18 - Create a proper plot of the following set of...Ch. 18 - Prob. 17ICACh. 18 - You want to create a graph showing the theoretical...Ch. 18 - The decay of a radioactive isotope can be...Ch. 18 - Create a proper plot of the theoretical voltage...Ch. 18 - Plot the following functions as assigned by your...Ch. 18 - Plot the following functions as assigned by your...Ch. 18 - If an object is heated, the temperature of the...Ch. 18 - The resistance of a typical carbon film resistor...Ch. 18 - Today, most traffic lights have a delayed green,...Ch. 18 - Cadmium sulfide (CdS) is a semiconducting material...Ch. 18 - Your supervisor has assigned you the task of...Ch. 18 - Three different diodes were tested: a constant...Ch. 18 - If a hot liquid in a container is left to cool,...Ch. 18 - You are an engineer working for M M / Mars...Ch. 18 - 1. The specific gravity of gold is 19.3. Write a...Ch. 18 - An unmanned X-43A scramjet test vehicle has...Ch. 18 - A rod on the surface of Jupiter's moon Callisto...Ch. 18 - The Eco-Marathon is an annual competition...Ch. 18 - Write a function and program to determine the mass...Ch. 18 - Prob. 6RQCh. 18 - You are part of an engineering firm on contract...Ch. 18 - Prob. 8RQCh. 18 - Prob. 9RQCh. 18 - When one tries to stop a car, both the reaction...Ch. 18 - Prob. 11RQCh. 18 - Prob. 12RQCh. 18 - Prob. 13RQCh. 18 - Prob. 14RQCh. 18 - Prob. 15RQCh. 18 - Prob. 16RQCh. 18 - Prob. 17RQCh. 18 - Prob. 18RQCh. 18 - Prob. 19RQCh. 18 - Prob. 20RQCh. 18 - Prob. 21RQCh. 18 - Prob. 22RQCh. 18 - Prob. 23RQCh. 18 - Prob. 24RQCh. 18 - Prob. 25RQCh. 18 - Prob. 26RQCh. 18 - Prob. 27RQCh. 18 - Prob. 28RQCh. 18 - Download the weekly retail gasoline and diesel...Ch. 18 - A sample of the data provided in the Microsoft...Ch. 18 - An Excel file named DartTosses.xlsx has one...
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