1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kykrilka [37]
3 years ago
6

A cylindrical specimen of a cold-worked brass has a ductility (%EL) of 27%. If its cold-worked radius is 14 mm, what was its rad

ius before deformation?

Engineering
1 answer:
blagie [28]3 years ago
5 0

Answer:

Initial radius of cylindrical specimen

ri = 15.46mm

Explanation:

Cw = [(A1 - A2)/A1] * 100% ...equation 1

Where CW = cold worked percentage gain  for( 27% EL) ductile

A2 = final area of cylindrical specimen = pai * r²

Where r = final radius of cylindrical specimen

So therefore expanding equation 1 will give

A1 * Cw = (100 * A1) - (100 * A2)

Cw = 18% from attached graph

A2 = area of cylindrical specimen after cold work = pai * 14² = 615.75mm²

So therefore

18A1 = 100A1 - (100 * 615.75)

-82A1 = -61575.22

A1 = 750.92mm²

So solving for initial radius from initial area of specimen

r1 = (A1/pai)^½

r1 = (750.92/pai)^½

r1= 15.46mm

You might be interested in
Drag each label to the correct location on the chart. Classify the organisms based on how they obtain food.
Arisa [49]

Autograph: Trees (Image 1), algae (Image 4), carrots (image 6)

Heterograph: Tiger (Image 2), deer (image 3), human (image 5)

Explanation:

The difference between autotroph and heterotroph organisms is the way they obtain energy. In the case of the first category, these include organisms that can produce energy by a process known as photosynthesis. This covers all plants and similar such as tress, algae, and carrots.

On the other hand, heterotrophic organisms cannot produce energy and need to feed on other organisms, which can include feeding on plants or animals. In this context, this category includes tigers because they feed on other animals, deer because they feed on plants, and humans because we feed on plants and animals.

3 0
3 years ago
Read 2 more answers
All arrived at an uncontrolled intersection at the same time. which has the right-of-way?:
Molodets [167]

If two vehicles arrive at an uncontrolled intersection almost simultaneously, the driver of the car that arrived at the intersection last must give the right of way. The driver on the left has the right of way if you both arrive at the intersection at the same moment.

Which driver should yield at an uncontrolled T-intersection?

The driver of the car turning must give way to all oncoming cross traffic when two cars are approaching an uncontrolled "T" crossroads. You need to stop and give way to vehicles and pedestrians while entering a public road from a driveway or private road.

What is right of way?

When two vehicles or pedestrians are approaching from opposite directions, moving at a speed, and close enough to create a collision, one has the right to move forward legally before the other, unless the other gives way.

Learn more about uncontrolled intersection: brainly.com/question/14312150

#SPJ4

4 0
2 years ago
Air is compressed slowly in a piston-cylinder assembly from an initial state where P1 = 1.4 bar, V1= 4.25 m^3, to a final state
lord [1]

Answer:

W=-940.36 KJ

Explanation:

Given that

P_1=1\ bar,V_1=4.25 {m^3}

P_2=6.8\ bar

Process follows pv=constant

So this is the isothermal process and work in isothermal process given as

W=P_1V_1\ln \dfrac{P_1}{P_2}

Now by putting the values                (1.4 bar =140 KPa)

W=P_1V_1\ln \dfrac{P_1}{P_2}

W=140\times 4.25 \ln \dfrac{1.4}{6.8}

W=-940.36 KJ

Negative sign indicates that this is a compression process and work will given to the system.

7 0
4 years ago
How much does the transportation sector contribute to current greenhouse gas emissions? Where do most of these emissions come fr
Mekhanik [1.2K]

Answer:

29 percent

Explanation:

The transportation sector is the highest contributing factor to greenhouse gas emissions in the world. Vehicles such as cars, motorcycles, airplanes, ships etc all emit these gases which causes global warming.

Electric cars is known not to little or zero direct emission and known to be safer. It however emits nitrogen oxide which is fog like in a very minute quantity.

6 0
3 years ago
If a mineral fractures, how many directions of cleavage does it have?
Sveta_85 [38]

Answer:

Cleavage occurs in straight lines in a mineral, with different minerals exhibiting 1, 2, or 3 directions of cleavage. Fractures however are irregular and follow how specific pattern or cleavages

3 0
3 years ago
Read 2 more answers
Other questions:
  • Explain why failure of this garden hose occurred near its end and why the tear occurred along its length. Use numerical values t
    15·1 answer
  • All of the following statements are true EXCEPT: A) air should be let out of a tire when it is hot. B) each change in outside te
    11·1 answer
  • Explain the process of fractional distillation (include cracking)
    11·1 answer
  • The purpose of the __________ algorithm is to enable two users to exchange a secret key securely that can then be used for subse
    8·1 answer
  • Which one of the following statements belt batter boards is correct
    15·2 answers
  • Select the correct text in the passage.
    6·2 answers
  • The _____________ is your car’s electrical charger. It’s various parts are contained in an aluminum housing and generate direct
    7·1 answer
  • A countinous shot that sense, flows well, and is understanable and pleasant to look at
    13·1 answer
  • Which symbol warns that there is something wrong with your alternator?
    8·1 answer
  • Subject of the study about vacuum cleaner
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!