A material with four electrons in the valence ring is called __________
A) An insulator B) A semiconductor C) A compound D) A conductor
B
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Twelve slugs of water is moving toward a turbine at a speed of 8 ft/s. How much kinetic energy does the water possess?
Fill in the blank(s) with the appropriate word(s).
Where the grounding electrode conductor or bonding jumper connects to a single or multiple rod, pipe, or plate electrode(s) or any combination thereof, or does not extend on to other types of electrodes that require a larger size conductor, the grounding electrode conductor shall not be required to be larger than ____.
A. 2 AWG copper wire or 4 AWG aluminum B. 4 AWG copper wire or 6 AWG aluminum C. 6 AWG copper wire or 4 AWG aluminum D. 6 AWG copper wire or 8 AWG aluminum
Wheel hubs that transfer drive from inboard final drives will:
a. be part of the axle shaft b. be driven by the ring gear c. only be lubricated by grease d. only be used to drive dual wheels
You built a retaining wall 45 feet long with a 12-inch-wide footer. You needed 7 inches of crushed stone in the bottom and then 3 inches of stone dust. On top of the stone dust you needed 6-inch stones which you used for the wall. The top of the stones is even with the ground.
a. How deep is the footer? b. How many cubic feet of dirt were removed? c. How many cubic feet of crushed stone were needed? d. How many cubic feet of stone dust were needed? e. How many 15-inch-wide stones were needed for the footer?