Problem 1.11 The rigid bar EFG is supported by the truss system shown. Knowing that the member CG is a solid circular rod of 0.75-in. diameter, determine the normal stress in CG.
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Following is a list of approximate conversion factors, useful for “back-of-the-envelope” estimates. None of them is exact, but most are accurate to within about ±10%.
? 1(atm) ? 1 bar
? 1(Btu) ?1 kJ
? 1(hp) ? 0.75 kW
? 1(inch) ? 2.5 cm
? 1(lbm) ? 0.5 kg
? 1(mile) ? 1.6 km
? 1(quart) ? 1 liter
? 1(yard) ? 1 m
Conversion Factors
The Revolutionary War began with fighting in ____; then in 1777-1778, fighting was concentrated in ____; and the fighting concluded in ____.
A. the South, the middle colonies, New England B. the middle colonies, New England, the South C. New England, the South, the middle colonies D. New England, the middle colonies, the South E. the middle colonies, the South, New England
Answer the following statement(s) true (T) or false (F)
1. When installing air conditioning equipment, if wire is used that is larger than needed, it will cause excessive voltage drop and damage the equipment. 2. The larger the diameter of a wire, the less resistance it will have and the more current it can carry. 3. As the temperature increases, the resistance of wire decreases. 4. The equipment nameplate is generally shown on the unit itself. 5. The ampacity of the wire must be selected on the basis of the lowest temperature rating in the circuit.
? Identify and state the historical significance of Margaret Sanger.
What will be an ideal response?