Problem 1.14 Two hydraulic cylinders are used to control the position of the robotic arm ABC. Knowing that the control rods attached at A and D each have a 20-mm diameter and happen to be parallel in the position shown, determine the average normal stress in (a) member AE, (b) member DG.


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Identify the axiom or postulate that applies to the following statement.    If m = n, then m- z = n- z

Fill in the blank(s) with the appropriate word(s).

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Technician A says that the research octane number is higher than the motor octane number. Technician B says that the octane rating posted on fuel pumps is an average of the two ratings. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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Four wheel hydraulic brake systems were introduced in _______

A) 1922 B) 1893 C) 1940 D) 1900

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The largest single digit in the decimal number system is ________

A) 1 B) 9 C) ? D) 10

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