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
leva [86]
2 years ago
12

Help please!!!!!

Engineering
1 answer:
Lady_Fox [76]2 years ago
4 0
I think it’s the last one, to examine principles that influence the production of goods and services
You might be interested in
"Write a statement that outputs variable numItems. End with a newline. Program will be tested with different input values."
kirill [66]

Answer:

The solution code is written in Java.

System.out.println(numItems);

Explanation:

Java <em>println() </em>method can be used to display any string on the console terminal. We can use <em>println()</em> method to output the value held by variable <em>numItems.</em> The <em>numItems </em>is passed as the input parameter to <em>println()</em> and this will output the value of <em>numItems</em> to console terminal and at the same time the output with be ended with a newline automatically.  

6 0
3 years ago
How does the two-stroke Otto cycle differ from the four-stroke Otto cycle?
Digiron [165]

Answer:

Two stroke cycle                                               Four stroke cycle

1.Have on power stroke in one revolution.   1.have one power  

                                                                   stroke in two  revolution                                                                            

2.Complete the cycle in 2 stroke                 2.Complete the cycle in 4 stroke    

3.It have ports                                                3.It have vales

                                                                         

4.Greater requirement of cooling              4.Lesser requirement of cooling  

5.Less thermal efficiency                            5.High thermal efficiency

6.Less volumetric efficiency                       6.High volumetric efficiency    

7.Size of flywheel is less.                           7.Size of flywheel is more.

3 0
3 years ago
A furnace wall composed of 200 mm, of fire brick. 120 mm common brick 50mm 80% magnesia and 3mm of steel plate on the outside. I
Liula [17]

Answer:

  • fire brick / common brick : 1218 °C
  • common brick / magnesia : 1019 °C
  • magnesia / steel : 90.06 °C
  • heat loss: 4644 kJ/m^2/h

Explanation:

The thermal resistance (R) of a layer of thickness d given in °C·m²·h/kJ is ...

  R = d/k

so the thermal resistances of the layers of furnace wall are ...

  R₁ = 0.200/4 = 0.05 °C·m²·h/kJ

  R₂ = 0.120 2.8 = 3/70 °C·m²·h/kJ

  R₃ = 0.05/0.25 = 0.2 °C·m²·h/kJ

  R₄ = 0.003/240 = 1.25×10⁻⁵ °C·m²·h/kJ

So, the total thermal resistance is ...

  R₁ +R₂ +R₃ +R₄ = R ≈ 0.29286 °C·m²·h/kJ

__

The rate of heat loss is ΔT/R = (1450 -90)/0.29286 = 4643.70 kJ/(m²·h)

__

The temperature drops across the various layers will be found by multiplying this heat rate by the thermal resistance for the layer:

  fire brick: (4543.79 kJ/(m²·h))(0.05 °C·m²·h/kJ) = 232 °C

so, the fire brick interface temperature at the common brick is ...

  1450 -232 = 1218 °C

For the next layers, the interface temperatures are ...

  common brick to magnesia = 1218 °C - (3/70)(4643.7) = 1019 °C

  magnesia to steel = 1019 °C -0.2(4643.7) = 90.06 °C

_____

<em>Comment on temperatures</em>

Most temperatures are rounded to the nearest degree. We wanted to show the small temperature drop across the steel plate, so we showed the inside boundary temperature to enough digits to give the idea of the magnitude of that.

5 0
3 years ago
Name the seven physical qualities for which standards have been developed.
SIZIF [17.4K]

Answer:

HUMAN DEVELOPMENT

MOTOR BEHAVIOR

EXERCISE SCIENCE

MEASUREMENT AND EVALUATION

HISTORY AND PHILOSOPHY

UNIQUE ATTRIBUTES OF LEARNERS

CURRICULUM THEORY AND DEVELOPMENT

Explanation:

6 0
3 years ago
A(n) ______ is used to measure fluid flow in engineering
Kazeer [188]

Explanation:

instrument of engineering and management skills that can be used to identify a device on a network of devices

6 0
3 years ago
Other questions:
  • Q: Draw shear and bending moment diagram for the beam shown in
    5·1 answer
  • Why do conditional statements always have only two outcomes?
    8·1 answer
  • Block B starts from rest and moves downward with a constant acceleration. Knowing that after slider block A has moved 400 mm its
    13·1 answer
  • Sadadasdasdasdasdadaaasd1
    14·1 answer
  • You're running an engine and seeing that it is exhausting blue smoke. Which is likely to
    9·1 answer
  • A package is thrown down an incline at A with a velocity of 1 m/s. The package slides along the surface ABC to a conveyor belt w
    13·1 answer
  • The cylinder C is being lifted using the cable and pulley system shown.
    8·1 answer
  • What is a beam on a bridge? what does it do?
    6·1 answer
  • What Is Photosynthesis ?​
    7·2 answers
  • Question 3
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!