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 15, Problem 15RQ
To determine
Write an algorithm to find the average grade point ratio (GPR) for the courses in a semester.
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4. Find the equivalent spring constant and equivalent viscous-friction coefficient for the systems shown
below.
@
B₁
B₂
H
B3
(b)
5. The cart shown below is inclined 30 degrees with respect to the horizontal. At t=0s, the cart is released
from rest (i.e. with no initial velocity). If the air resistance is proportional to the velocity squared.
Analytically determine the initial acceleration and final or steady-state velocity of the cart. Take M=
900 kg and b 44.145 Ns²/m².
Mg
-bx 2
от
9₁
A
Insulated boundary
Insulated boundary
dx
Let's begin with the strong form for a steady-state one-dimensional heat
conduction problem, without convection.
d dT
+ Q =
dx dx
According to Fourier's law of heat conduction, the heat flux q(x), is
dT
q(x)=-k
dx. x
Q is the internal heat source, which heat is generated per unit time per unit
volume. q(x) and q(x + dx) are the heat flux conducted into the control
volume at x and x + dx, respectively. k is thermal conductivity along the x
direction, A is the cross-section area perpendicular to heat flux q(x). T is the
temperature, and is the temperature gradient.
dT
dx
1. Derive the weak form using w(x) as the weight function.
2. Consider the following scenario: a 1D block is 3 m long (L = 3 m), with
constant cross-section area A = 1 m². The left free surface of the block
(x = 0) is maintained at a constant temperature of 200 °C, and the right
surface (x = L = 3m) is insulated. Recall that Neumann boundary
conditions are naturally satisfied…
Chapter 15 Solutions
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
Ch. 15.1 - For the problem statement, list all knowns,...Ch. 15.1 - For the problem statement, list all knowns,...Ch. 15.2 - Create a written algorithm to multiply all integer...Ch. 15.3 - Create a graphical algorithm to multiply all...Ch. 15 - Your instructor will provide you with a picture of...Ch. 15 - Describe the steps necessary to create a paper...Ch. 15 - Describe the steps necessary to create a jelly...Ch. 15 - An unmanned X-43A scramjet test vehicle has...Ch. 15 - Convert a temperature provided by the user in...Ch. 15 - Determine the mass of oxygen gas (formula: O2...
Ch. 15 - Determine the length of one side of a cube of...Ch. 15 - The Occupational Safety Health Administration...Ch. 15 - Prob. 9ICACh. 15 - Prob. 10ICACh. 15 - Describe the steps necessary to cook your favorite...Ch. 15 - Describe the steps necessary to walk from your...Ch. 15 - Prob. 13ICACh. 15 - Prob. 14ICACh. 15 - Create a flowchart that represents the following...Ch. 15 - Prob. 16ICACh. 15 - Create an algorithm to determine the weight of a...Ch. 15 - The Eco-Marathon is an annual competition...Ch. 15 - Prob. 3RQCh. 15 - Prob. 4RQCh. 15 - 5. Create an algorithm to determine how long it...Ch. 15 - The Apple TV is a personal video device created by...Ch. 15 - Prob. 7RQCh. 15 - Prob. 8RQCh. 15 - Prob. 9RQCh. 15 - Prob. 10RQCh. 15 - Prob. 11RQCh. 15 - Create a written algorithm or flowchart as...Ch. 15 - Prob. 13RQCh. 15 - Prob. 14RQCh. 15 - Prob. 15RQ
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- 2. Figure 2 shows a device for lifting bricks and concrete blocks. It comprises two compo- nents ABC and BD, with a frictionless pin at B. Determine the minimum coefficient of friction required at A and D if the device is to work satisfactorily. W all dimensions in inches Figure 2 Darrow_forward1. The shaft AD in Figure 1 supports two pulleys at B and C of radius 200 mm and 250 mm respectively. The shaft is supported in frictionless bearings at A and D and is rotating clockwise (when viewed from the right) at a constant speed of 300 rpm. Only bearing A can support thrust. The tensions T₁ = 200 N, T₂ = 400 N, and T3 = 300 N. The distances AB = 120 mm, BC = 150 mm, and CD120 mm. Find the tension 74 and the reaction forces at the bearings. A T fo Figure 1arrow_forward5. Figure 5 shows a two-dimensional idealization of the front suspension system for a car. During cornering, the road exerts a vertical force of 5 kN and a leftward horizontal force of 1.2 kN on the tire, which is of 510 mm diameter. Draw free-body diagrams of each component and determine the forces transmitted between them. 250 A -320 B 170 D 170 -220-220- all dimensions in mm. Figure 5arrow_forward
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