Instructions: On occasion, the notation 
= [A, ?] will be a shorthand notation for 
.
?
Exhibit 3-4
The diagram below shows the path taken by a sailboat tacking sideways because it cannot sail directly into the wind.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 3-4. The total displacement of the sailboat, the vector sum of its displacements OB, BC, CD and DE, is
A. 1732 m, East.
B. 2000 m, Northeast.
C. 6298 m, East.
D. 8000 m, Southeast.
E. 8000 m, East.
Answer: C
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A solid lead cylinder 0.6-m in diameter and 0.6-m long, initially at a uniform temperature of 121°C, is dropped into a 21°C liquid bath in which the heat transfer coefficient h cis 1135 W/(m2 K). Plot the temperature-time history of the center of this cylinder and compare it with the time histories of a 0.6 m-diameter, infinitely long lead cylinder and a lead slab 0.6 m-thick.
GIVEN
• A solid lead cylinder dropped into a liquid bath
• Cylinder diameter (D) = 0.6 m
• Cylinder (L) = 0.6 m
• Initial uniform temperature (To) = 121°C
• Liquid bath temperature (T?) = 21°C
• Heat transfer coefficient h c= 1135 W/(m2 K)
FIND
(a) Plot the temperature-time history of the cylinder center (b) Compare it with the time history of a 0.6 m diameter, infinitely long lead cylinder (c) Compare it with the time history of a lead slab 0.6 m thick
ASSUMPTIONS
• Two dimensional conduction within the cylinder
• Constant and uniform properties
• Constant liquid bath temperature
SKETCH
Which of the following are found on Triton?
a. craters b. flooded basins c. atmospheric clouds d. a thick nitrogen atmosphere e. craters, flooded basins, atmospheric clouds, and a thick nitrogen atmosphere
A hydraulic press, like an inclined plane, is capable of increasing energy
A) sometimes true B) always false C) always true D) sometimes false
As shown below, a square loop of wire of side a moves through a uniform magnetic field of magnitude B perpendicular to the page at constant velocity 
directed to the right. Which statement regarding the electric field induced in the wires is correct for the wires at the left and right sides of the loop?
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A.
is directed upwards in both the right and left sides of the loop.B.
is directed upwards in the right side and downwards in the left side of the loop.C.
is directed upwards in the left side and downwards in the right side of the loop.D.
is directed downwards in both the right and left sides of the loop.E.