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
mash [69]
3 years ago
6

Which type of engineering design uses an already-existing design?

Engineering
2 answers:
Vaselesa [24]3 years ago
8 0

Answer:

c

Explanation:

Arte-miy333 [17]3 years ago
4 0
The answer is D I’m 90% sure
You might be interested in
Which of the following can effect LRO?
aleksley [76]

Answer:

The lunar radiation environment, allowing scientists to determine potential impacts to astronauts and other life. It also will test models on the effects of radiation and measure radiation absorption by a type of plastic that is like human tissue. The results could aid in the development of protective technologies to help keep future lunar crew members safe. CRaTER was built and developed by Boston University and the Massachusetts Institute of Technology in Boston.

7 0
2 years ago
What is the primary damage control telephone circuit for
user100 [1]

Answer:

hsyghcjqg9ug9duyssatayfjzurldh

6 0
2 years ago
For a steel alloy it has been determined that a carburizing heat treatment of 11.3 h duration will raise the carbon concentratio
diamong [38]

This question is incomplete, the complete question is;

For a steel alloy it has been determined that a carburizing heat treatment of 11.3 h duration at Temperature T1 will raise the carbon concentration to 0.44 wt% at a point 1.8 mm from the surface. A separate experiment is performed at T2 that doubles the diffusion coefficient for carbon in steel.

Estimate the time necessary to achieve the same concentration at a 4.9 mm position for an identical steel and at the same carburizing temperature T2.

Answer:

the required time to achieve the same concentration at a 4.9 is 83.733 hrs

Explanation:

Given the data in the question;

treatment time t₁ = 11.3 hours

Carbon concentration = 0.444 wt%

thickness at surface x₁ = 1.8 mm = 0.0018 m

thickness at identical steel x₂ = 4.9 mm = 0.0049 m

Now, Using Fick's second law inform of diffusion

x^2 / Dt = constant

where D is constant

then

x^2 / t = constant

x^2_1 / t₁ = x^2_2 / t₂

x^2_1 t₂ = t₁x^2_2

t₂ = t₁x^2_2 / x^2_1

t₂ = (x^2_2 / x^2_1)t₁

t₂ = ( x_2 / x_1 )^2 × t₁

so we substitute

t₂ = ( 0.0049  / 0.0018  )^2 × 11.3 hrs

t₂ = 7.41 × 11.3 hrs

t₂ = 83.733 hrs

Therefore, the required time to achieve the same concentration at a 4.9 is 83.733 hrs

8 0
2 years ago
Do plastic materials have high or low ductility? Explain why.​
Flura [38]
The impact behavior of plastic materials is strongly dependent upon the temperature. At high temperatures, materials are more ductile and have high impact toughness. At low temperatures, some plastics that would be ductile at room temperature become brittle.
3 0
2 years ago
how are the construction steps for bisecting an angle similar to the steps you would have taken to construct and bisect a line s
GREYUIT [131]

Answer:

does the question entail anything else?

Explanation:

5 0
2 years ago
Other questions:
  • To ensure safe footing on penetrable surfaces,use?
    5·1 answer
  • Explain the differences between 1- Energy 2- Power 3- Work 4- Heat Your answer should explain the mathematica and physical meani
    5·1 answer
  • Assignment 1: Structural Design of Rectangular Reinforced Concrete Beams for Bending
    6·1 answer
  • Calculate the resistance using Voltage and current, again using voltage and power, again using current and power, and again usin
    12·1 answer
  • Is it possible to interface an IC with a different technology such as TTL to HCS12 ports? What are the conditions in terms of el
    10·1 answer
  • Please help I need it by today!!!
    10·1 answer
  • Water flows through a horizontal 60 mm diameter galvanized iron pipe at a rate of 0.02 m3/s. If the pressure drop is 135 kPa per
    9·1 answer
  • Which of these are factors of 121?
    13·2 answers
  • BIG POINTS AND WILL GIVE BRAINLIEST! Answer all 5 please or I can’t give brainliest and might report!
    10·1 answer
  • Although studs are sometimes spaced 24" O.C. in residential structures, a spacing of_____ O.C. is more commonly used.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!