Calculate the second moment of area of a 4-in-diameter shaft about the x-x and y-y axes, as shown.
Note there is no difference between the second moment of area for a shaft about
the x-x and y-y axes.
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Canola is now being used on a limited basis as a lubricant and has been used to make:
a. Plastic c. Clothing b. Synthetic rubber d. Synthetic wood
The skeleton of the heart consists of
A) a reticular connective tissue within the myocardium. B) a bone in the interatrial septum. C) a bone in the interventricular septum. D) dense bands of tough, elastic connective tissue. E) fibrous connective tissue in the auricle of the atrium.
A trapezoid that is 9.1 cm high has a lower base of 12.4 cm and an upper base of 8 cm. What is the trapezoid’s area, in square cm? Round the answer to the nearest tenth.
What will be an ideal response?
Acid in the water can react with copper pipes to leave stains that are _____.
a. red b. black c. green d. yellow