A low retaining wall forms a well around the tree, allowing the roots of the tree to breathe.
Answer the following statement true (T) or false (F)
True
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Mr. Walker built a new home on a two-acre lot. The house, drive, and walks contain 3,200 square feet. He has an area for plants in front of the house 5 feet wide and 62 feet long to which 4 inches of topsoil were added. In front of the other plants in the area, he set out annuals 8 inches apart. The annuals come in trays of 12 four-packs. He laid 150 feet by 110 feet of sod in the front lawn. The remainder of the lawn was seeded with 2.2 pounds of grass seed per 1,000 square feet, and he applied 4.5 pounds of nitrogen per 1,000 square feet using the lawn fertilizer 20-5-10 that comes in 50-pound bags.
a. How many square feet of sod did he lay? b. How many cubic yards of topsoil did he add to the plant area? c. How many trays of annuals did he purchase? d. How many square feet did he seed? e. How many pounds of grass seed did he use? f. How many bags of fertilizer did he purchase?
Ultraviolet light-generating equipment can be used in HVAC air distribution systems to _____.
a. reduce odors caused by cigarette smoke b. help prevent the growth of bacteria and micro-organisms c. protect coils and drain pans from ice buildup d. examine the duct work for cleanliness and damage
UL Class R fuses have a short circuit interrupting rating of up to _____.
a. 50,000A b. 75,000A c. 125,000A d. 200,000A
What is the primary current in Figure 14-1 if IS = 40 mA and the turns ratio equals 4:1?
A) 160 mA B) 40 mA C) 4 mA D) 10 mA