Practice Quiz

FE Civil Engineering Exam Prep - Question List

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86. Given a triangle with sides a = 20 feet, b = 40 feet, and c = 56, what is the area in square feet?
  1. 71.67 ft2
  2. 116.00 ft2
  3. 281.68 ft2
  4. None of the above
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87. Use a calculator to find the sine of 46.3°
  1. 0.013
  2. 0.691
  3. 0.723
  4. 1.00
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88. What must be true about two given objects so that energy can be transferred as heat between them?
  1. The objects must be relatively close.
  2. The objects must be at different temperatures.
  3. The objects must contain a significant amount of energy.
  4. The objects must be of significant mass.
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89. In theory, the weight of an observation is defined to be ______ to the variance (standard error squared) of the observation.
  1. Proportional
  2. Inversely proportional
  3. Equal
  4. None of the above.
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90.

The given numbers are daily groundwater elevation readings from a monitoring well taken during a month experiencing snowmelt and extended rainfall events. What is the sample variance of these groundwater elevation readings?

7.6
7.6
7.7
7.7
4.3
4.3
5.9
5.9
5.0
5.0
10.5
10.5
7.7
7.7
9.5
9.5
12.0
12.0
12.6
12.6
7.6
7.7
4.3
5.9
5.0
10.5
7.7
9.5
12.0
12.6
6.5
6.5
8.3
8.3
8.2
8.2
13.2
13.2
12.6
12.6
13.6
13.6
14.1
14.1
13.5
13.5
11.5
11.5
12.0
12.0
6.5
8.3
8.2
13.2
12.6
13.6
14.1
13.5
11.5
12.0
10.4
10.4
10.8
10.8
13.1
13.1
12.5
12.5
10.4
10.4
13.0
13.0
14.1
14.1
15.1
15.1

  1. 8.764
  2. 9.089
  3. 10.56
  4. None of the above
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