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Fiesta28 [93]
3 years ago
15

A ductile hot-rolled steel bar has a minimum yield strength in tension and compression of Syt = 60 kpsi and Syc = 75 kpsi. Using

the ductile Coulomb-Mohr theory, determine the factor of safety for the states of plane stress.

Engineering
1 answer:
kow [346]3 years ago
4 0

Answer:

2.135

Explanation:

Lets make use of these variables

Ox 16.5 kpsi, and Oy --14,5 kpsi

To determine the factor of safety for the states of plane stress. We have to first understand the concept of Coulomb-Mohr theory.

Mohr–Coulomb theory is a mathematical model describing the response of brittle materials such as concrete, or rubble piles, to shear stress as well as normal stress.

Please refer to attachment for the step by step solution.

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Depth perception is important in judging the ........... position of the vehicle to fixed objects
dimaraw [331]

Depth perception is important in judging the relative position of the vehicle to fixed objects; Relative

<h3>Depth Perception</h3>

Depth perception is defined as the ability the human mind to perceive the surrounding environment in a three dimensional way which will also include the distance to an object through vision, regardless of if the object is fixed, in motion, in front, or behind.

Now looking at the options given, from our definition, we can say that the correct answer is relative position.

Read more on Depth perception at; brainly.com/question/7067983

6 0
2 years ago
A 40 hp, 1780 rpm 460 V, 3-phase, 60 Hz drip-proof Baldor Super E premium energy induction motor has a power factor of 86% and a
zysi [14]

Answer:

$26,524.95

Explanation:

In order to figure out how much it costs to drive the motor for 3 years, we must first figure out how many kW there are to the 40hp power of the motor, so we do a conversion:

40Hp*\frac{0.7457kW}{1Hp}=29.828kW

Once we got how many kW there are to the 40Hp, we can now figure out how much electric power the motor is consuming, we can do that by using the efficiency of the motor, so we get:

Power=\frac{29.828kW}{0.921}=32.387kW

Now we can figure out for how many hours the motor is going to be driven throughout the 3 years.

3years*\frac{52weeks}{1 year}*\frac{5days}{1week} *\frac{14hr}{1day}=10,920 hrs[\tex]

now that we got the number of hours the motor will be working, we can now find the number of kWh the motor consumes during the 3 years:

32.387kW*10,920hr=353,666.04kWh

So now we can figure out how much it will cost to drive the motor:

353,666.04kWh*\frac{\$0.075}{1kWh}=$26,524.95

4 0
3 years ago
A city has a population of 50,000 people, an average household generated wastewater flow of 430 L/day-person, and the average BO
Andrew [12]

Answer:

The ultimate BOD of waste water is 265 milligram per Liter.

Explanation:

To start with and properly determine the ultimate BOD of the waste water, we need to determine the volume of water used by the population in the city within five days.

Therefore,   50000 people × 430 Liters ÷ day-person × 5 days

1.08 × 10∧8 Liters

The mass BOD5 by the city population in 5 days is therefore,

0.1 kilogram ×  BOD5 ÷ day-person × 50000 people × 5 days

2.5 × 10 ∧ 4 BOD5

The 5 days BOD of waste water is therefore,

5d = 2.5 × 10 ∧ 4 / 1.08 × 10 ∧ 8 Liters × 1000grams  ÷ 1 kilogram × 1000mg ÷ 1gram

233 milligram / liter

The ultimate BOD, is therefore,

ULo = 5d ÷ (1 - e ∧ -k5)

Solving this further, we derive

265 milligram per Liter.

7 0
3 years ago
21 With a negative pressure respirator, when you inhale, you pull air through a filter and when you exhale, a valve
HACTEHA [7]

Answer:

True

Explanation:

5 0
3 years ago
A vacuum system, as used in sputtering electrically conducting thin films on microcircuits, is comprised of a baseplate maintain
Kitty [74]
The answer is b because it makes more sense
3 0
2 years ago
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