Which of the following is true regarding tilt-up construction?
a. The panels are generally lightweight, making them easy to lift and place.
b. The panels are normally constructed offsite and brought in on trucks.
c. Once placed, the panels are typically self-supporting.
d. Only a qualified engineer can make changes to the lifting plan.
d. Only a qualified engineer can make changes to the lifting plan.
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Technician A says that a 1k ohm 2-watt resistor and a 1k ohm 
watt resistor both have the same value of resistance. Technician B says that a potentiometer has two electrical terminals. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
PROBLEM 2.18 The brass tube AB (E = 15 ? 106 psi) has a cross-sectional area of 0.22 in2 and is fitted with a plug at A. The tube is attached at B to a rigid plate that is itself attached at C to the bottom of an aluminum cylinder (E = 10.4 ? 106 psi) with a cross-sectional area of 0.40 in2. The cylinder is then hung from a support at D. In order to close the cylinder, the plug must move down through in. Determine the force P that must be applied to the cylinder.
A reflex angle is an angle greater than 180°.
Answer the following statement true (T) or false (F)