J. T. Fields planted 490 acres of corn. He planted 30,000 kernels per acre of an 80,000-kernel bag of seed corn. He has a population of 26,000 plants per acre.
a. How many bags of seed corn were purchased?
b. What was the population on the 490 acres? Express your answer in scientific notation using the correct number of significant digits.
c. What was the germination of the seed corn?
a. 184 bags
b. 1.3 × 107 plants
c. 87%
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A 1-in-diameter rod, 3 ft long, of unknown material is found in a machine shop. A variety of inexpensive nondestructive tests are readily available to help determine the material, as described below:
A ground fault is described as an unintentional _____.
a. connection between two or more portions of the equipment grounding conductor b. open connection between an electrical circuit or equipment and the earth c. conducting connection between any of the conductors of an electrical system d. electrically conducting connection between an ungrounded conductor of an electrical circuit and the normally non-current-carrying conductors
Wall-mounted underwater luminaires must be installed so that the top of the lens is at least how many inches below the water level?
a. 5 b. 8 c. 12 d. 18
What diagnostic trouble code (DTC) could be set if the thermostat is defective?
A) P0440 B) P0128 C) P0300 D) P0171