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
kicyunya [14]
1 year ago
8

Is annealed polycrystalline copper a material that work hardens significantly or a material that exhibits a low work-hardening r

ate
Engineering
1 answer:
Olegator [25]1 year ago
6 0

Those that harden under strain, such as the aluminum-magnesium alloys used in beverage cans and the copper-zinc alloy, brass, used for cartridges, which show more strain hardening than pure copper or aluminum, respectively.

When a material is deformed under a substantial amount of strain, strain hardening is seen as a strengthening process. Lamellar crystals and chain molecule orientation on a vast scale are the culprits. When plastic materials are stretched past their yield point, this phenomena is frequently seen. When a metal is stretched past its yield point, strain hardening occurs. The metal appears to get stronger and harder to deform as more stress is needed to cause additional plastic deformation. Strain hardening is directly related to fatigue.

Learn more about strain hardening here-

brainly.com/question/15058191

#SPJ4

You might be interested in
The Ford Fusion Hybrid SE uses hybrid fuel technology with the latest in lithium-ion battery technology to deliver more power, c
stellarik [79]

Answer:

evaluative criteria.

Explanation:

Evaluative criteria is a term in marketing that Is used when a customer decides to go for a different kind of product that is different from the one they originally had in mind because of certain attributes. These attributes could be objective in nature such as power and fuel economy or it could subjective when things like prestige and convenience are being looked at.

4 0
3 years ago
Air enters a 34 kW electrical heater at a rate of 0.8 kg/s with negligible velocity and a temperature of 60 °C. The air is disch
Flura [38]

Answer:

79 kW.

Explanation:

The equation for enthalpy is:

H2 = H1 + Q - L

Enthalpy is defined as:

H = G*(Cv*T + p*v)

This is specific volume.

The gas state equation is:

p*v = R*T (with specific volume)

The specific gas constant for air is:

287 K/(kg*K)

Then:

T1 = 60 + 273 = 333 K

T2 = 200 + 273 = 473 K

p1*v1 = 287 * 333 = 95.6 kJ/kg

p2*v2 = 287 * 473 = 135.7 kJ/kg

The Cv for air is:

Cv = 720 J/(kg*K)

So the enthalpies are:

H1 = 0.8*(0.72 * 333 + 95.6) = 268 kW

H2 = 0.8*(0.72 * 473 + 135.7) = 381 kW

Ang the heat is:

Q = 34 kW

Then:

H2 = H1 + Q - L

381 = 268 + 34 - L

L = 268 + 34 - 381 = -79 kW

This is the work from the point of view of the air, that's why it is negative.

From the point of view of the machine it is positive.

4 0
4 years ago
Compare and contrast an electric vehicle with one powered by a fuel cell.
zmey [24]

Answer:

both technologies offer a cleaner alternative to internal combustion engines, and both use electric motors powered by electrochemical device.

3 0
3 years ago
When implementing a safety and health program, management leadership does not need employee participation a True b) False Effect
sladkih [1.3K]

Answer: I have answered the questions in rephrased sentences as below;

When implementing a safety and health program, management leadership need employee participation. Effective management of worker safety and health programs has improved employee productivity and morale in the workplace.

Nearly a third of all serious occupational injuries and illnesses stem from overexertion of repetitive motion.

Training is a way for employers to provide tools to enable employees to protect themselves and others from injuries.

Under OSHA, employees are protected from discrimination when reporting a work-related injury, illness, or fatality.

Explanation: All personnel including management & employees must be directly involved when workplace HSE policies are being made & reviewed. This is because everyone in the work environment is impacted one way or the other when incidents occur.

Training & Reporting are key responsibilities of managers, employers & supervisors, so it is mandatory to be done without discrimination so as to foster employees happiness which ultimately lead to zero incidents & increased productivity & profit.

3 0
3 years ago
The distribution of SAT scores of all college-bound seniors taking the SAT in 2014 was approximately normal with mean μ=1497 and
Sav [38]

Answer:

1279

Explanation:

We have the mean u = 1497

Standard deviation sd = 322

We find the x distribution using 25%

P(Z<z) = 0.25

Z = -0.675

From here we use the formula for z score

X = z(sd) + u

X = -0.675*322 + 1497

X = -217.35 + 1497

X = 1279.6

Which is approximately 1279

So we conclude that the maximum sat scores in year 2014that meets with the requirements of this course is 1279

4 0
3 years ago
Other questions:
  • What is the difference between the Otto and Diesel engine?
    7·1 answer
  • A structure that extends from a bridge to<br>form a firm foundation​
    6·2 answers
  • Modulus of resilience is: (a) Slope of elastic portion of stress- strain curve (b) Area under the elastic portion of the stress-
    12·1 answer
  • Jason’s Petrochems is a firm that brings in chemical intermediates such as organic fertilizers and organic solvents from differe
    6·1 answer
  • What should a technician do before entering a confined space? Question 1 options: A) Post another worker outside the confined sp
    11·1 answer
  • An angle is observed repeatedly using the same equipment and procedures producing the data below:35 ∘ 40'00",35 ∘ 40'10",35 ∘ 40
    12·1 answer
  • Carbon nanotubes can be a considered toxic agent due to: (a)- Its ability to produce toxic gases (b)Its ability to penetrate ski
    8·1 answer
  • What is the correct order for the first three steps of the engineering design process?
    5·1 answer
  • ............................................................................<br> cuanto es 2+2
    10·2 answers
  • Moonbeam-Musel (MM), a manufacturer of small appliances, has a large injection molding department. Because MM's CEO, Crosscut Sa
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!