AUTOMOTIVE TECHNOLOGY TECH MANUAL
7th Edition
ISBN: 9781337794220
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 48, Problem 4TF
True or False? When servicing the steering wheel or column, disconnect and remove the clockspring to make sure it is in good shape before reusing it
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The two disks A and B have a mass of 4 kg and 6 kg,
respectively. They collide with the initial velocities shown. The
coefficient of restitution is e = 0.75. Suppose that
(VA)1 = 6 m/s, (VB)₁ = 7 m/s. (Figure 1)
Determine the magnitude of the velocity of A just after impact.
Determine the angle between the x axis and the velocity of A just after impact, measured clockwise from the negative x axis.
Determine the magnitude of the velocity of B just after impact.
Determine the angle between the x axis and the velocity of B just after impact, measured clockwise from the positive x axis.
(VB)1
B
(VA)1
60°
Line of impact
A hot plane surface is maintained at 100°C, and it is exposed to air at 25°C.The combined heat transfer coefficient between the surface and the air is 25W/m²·K. (same as above). In this task, you are asked to design fins to cool asurface by attaching 3 cm-long, 0.25 cm-diameter aluminum pin fins (thermalconductivity, k = 237 W/m·K) with a center-to-center distance of 0.6 cm. (Tip:do not correct the length). Determine the rate of heat transfer from thefinned structure to the air for a 1 m x 1 m section of the plate.
Heat is generated uniformly in a 4 cm-diameter, 16-cm long solid bar (k=2.4 W/m-K). The temperaturesat the center and at the surface of the bar are measured to be 210 oC and 45 oC, respectively. Calculatethe rate of heat generation within the bar. Solve the relevant energy balance equation and the boundaryconditions to calculate the rate of heat generation within the bar. (6 pts)
Chapter 48 Solutions
AUTOMOTIVE TECHNOLOGY TECH MANUAL
Ch. 48 - What is the difference between a passive and an...Ch. 48 - Prob. 2SACh. 48 - List at least five service precautions that must...Ch. 48 - Describe the two basic types of passenger weight...Ch. 48 - Describe the three types of safing sensors.Ch. 48 - True or False? The powdery substance released from...Ch. 48 - True or False? The air bag diagnostic monitor...Ch. 48 - Prob. 3TFCh. 48 - True or False? When servicing the steering wheel...Ch. 48 - Which of the following statements about the SRS...
Ch. 48 - What type of scat belt operates automatically with...Ch. 48 - Which of the following is false? The air bag...Ch. 48 - Prob. 4MCCh. 48 - Which of the following statements about two-stage...Ch. 48 - Which of the following statements about seat belt...Ch. 48 - Prob. 1ASRQCh. 48 - Technician A says that seat belt webbing should be...Ch. 48 - Technician A says that the module assembly will...Ch. 48 - While testing seat belt retractors: Technician A...Ch. 48 - Technician A checks the clockspring electrical...Ch. 48 - Technician A removes the positive battery cable...Ch. 48 - Technician A says that ignition of the air bag...Ch. 48 - When replacing an air bag module: Technician A...Ch. 48 - While diagnosing a seat belt that will not buckle:...Ch. 48 - While diagnosing the cause of a constant SRS...
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