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guapka [62]
3 years ago
5

Your coworker was impressed with the efficiency you showed in the previous problem and would like to apply your methods to a pro

ject at a site with a sandy clay profile. Direct shear test results show a vertical pressure of 80 kPa and the shear stress at failure of 48 kPa. Present your recommendations to your coworker.
Engineering
1 answer:
JulijaS [17]3 years ago
4 0

Answer:

48 = C' + 80 tanФ

Explanation:

Recommendations to my coworker

a) Note that there are two unknowns, C' & Ф in the equation, so minimum of two test readings are required to have correct equation of the failure envelope.

Given reading of coworker

σn = 80 kPa

τf = 48 kPa

∴ 48 = C' + 80 tanФ

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You are hitting a nail with a hammer (mass of hammer =1.8lb) the initial velocity of the hammer is 50 mph (73.33 ft/sec). The ti
Archy [21]

Answer:

The nail exerts a force of 573.88 Pounds on the Hammer in positive j direction.

Explanation:

Since we know that the force is the rate at which the momentum of an object changes.

Mathematically \overrightarrow{F}=\frac{\Delta \overrightarrow{p}}{\Delta t}

The momentum of any body is defines as \overrightarrow{p}=mass\times \overrightarrow{v}

In the above problem we see that the moumentum of the hammer is reduced to zero in 0.023 seconds thus the force on the hammer is calculated using the above relations as

\overrightarrow{F}=\frac{m(\overrightarrow{v_{f}}-\overrightarrow{v_{i}})}{\Delta t}

\overrightarrow{F}=\frac{m(0-(-73.33)}{0.23}=\frac{1.8\times 73.33}{0.23}=573.88Pounds

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3 years ago
Case Study # 1: Cadbury Crisis Management (Worm Controversy)
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H is the answer
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3 0
3 years ago
(a) Differentiate between heat treatment of ferrous and non-ferrous alloys (b) With your understanding of material's thermal pro
liubo4ka [24]

Answer:

In ferrous metal iron present but on the other hand in the non ferrous material iron does not present.That is why there is a different heat treatment process for ferrous and nonferrous materials.

Ferrous materials contains iron is the main constitute.Like steel ,cast iron ,wrought iron .Steel and cast iron are  the alloy element of iron ans carbon.Wrought iron is the purest from of iron.

Heat treatment process for  ferrous materials :

1.Normalizing

2.Annealing

3.Quenching

4.Surface hardening

Heat treatment process for non ferrous materials :

Mostly annealing process is used for non ferrous materials.After annealing non ferrous will become soft.

When two metal plates are joined then they form a bimetallic structure.The bimetallic structure is used to find the relationship of thermal temperature and the mechanical displacement.

The use of bimetallic structure -In clock ,thermometers ,engines.

7 0
3 years ago
The steel bracket is used to connect the ends of two cables. if the allowable normal stress for the steel is sallow = 30 ksi, de
garri49 [273]

The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb

<h3>The static equilibrium is given as:</h3>

F = P (Normal force)

Formula for moment at section

M = P(4 + 1.5/2)

= 4.75p

Solve for the cross sectional area

Area = \frac{\pi d^{2} }{4}

d = 1.5

\frac{\pi *1.5^{2} }{4}

= 1.767 inches²

<h3>Solve for inertia</h3>

\frac{\pi *0.75^4}{4}

= 0.2485inches⁴

Solve for the tensile force from here

\frac{F}{A} +\frac{Mc}{I}

30x10³ = \frac{P}{1.767} +\frac{4.75p*0.75}{0.2485} \\\\

30000 = 14.902 p

divide through by 14.902

2013.15 = P

The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb

Read more on tensile force here: brainly.com/question/25748369

4 0
2 years ago
Why are Gas cars Bad?(cons) pls help me its part of project thx<br>:) thx if u do help​
o-na [289]

Answer:

  • Depletes Fossil Fuels
  • Polution

Explanation:

Fossil Fuels take millions of years to be made. Gasoline is made up of primarily petroleum (a fossil fuel) which is easily refined into gasoline or kerosene. This means that once you run out of a fossil fuel...you're out of it.

Gas cars are also very big polutants. If you've ever heard of an emmisions test for a car, it is a test that sees how much pollution a car puts out into the air. It meassures how safe those levels are. This is a big indicator of how much cars pollute becasue there is a need to test your car every year. The gases that can be put into the air are harmful not only to humans and animals but to the climate and atmosphere.

5 0
3 years ago
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