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pshichka [43]
2 years ago
9

After a strong storm, a worker does not realize that a power transmission line has fallen on his car and is electrocuted while o

pening the car door. What is this an example of?
Select the best option.

Contacting Overhead Power Lines


Incorrect Use of GFCI


Using Extension or Flexible Cords Improperly
Engineering
1 answer:
joja [24]2 years ago
3 0

Answer and Explanation:

<u>The correct answer choice is Contacting Overhead Power Lines.</u>

This is because the powerlines are making contact (touching) his car, and the example isn't related to the other answer choices.

<u><em>#teamtrees #PAW (Plant And Water)</em></u>

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The inner surface of a hollow cylinder is subjected to tangential and axial stresses of 40,000 and 24,000 psi, respectively. Det
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15,000 psi

Explanation:

The solution / solving is attach below.

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Consider casting a concrete driveway 40 feet long, 12 feet wide and 6 in. thick. The proportions of the mix by weight are given
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Answer:

Weight of cement = 10968 lb

Weight of sand = 18105.9 lb

Weight of gravel = 28203.55 lb

Weight of water = 5484 lb

Explanation:

Given:

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Length, L = 40 ft

Width,w = 12 ft

thickness,b= 6 inch, convert to ft = 6/12 = 0.5 ft

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Specific gravity of gravel = 2.70

The volume will be:

40 * 12 * 0.5 = 240 ft³

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Dry volume = wet volume * 1.54 (concrete)

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Due to the 7% entarained air content, the required volume will be:

V = 360 * (1 - 0.07)

V = 334.8 ft³

At a ratio of 1:2:3 for cement, sand, and gravel respectively, we have:

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Their respective volume will be =

Volume of cement = \frac{1}{6}*334.8 = 55.8 ft^3

Volume of sand = \frac{2}{6}*334.8 = 111.6 ft^3

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To find the pounds needed the driveway, we have:

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Specific gravity of cement = 3.15

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4 0
3 years ago
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