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
Katarina [22]
3 years ago
10

I need ideas for what to build because I have some spare wood.

Engineering
1 answer:
Misha Larkins [42]3 years ago
6 0

Answer:

small guitar with no strings?

Explanation:

it would be fun to make i think

You might be interested in
Water vapor at 6 MPa, 500°C enters a turbine operating at steady state and expands to 20 kPa. The mass flow rate is 3 kg/s, and
Blababa [14]

Answer:

a)75.8%

b)2.517KW/K

Explanation:

Hello!

To solve this problem follow the steps below

Through laboratory tests, thermodynamic tables were developed, these allow to know all the thermodynamic properties of a substance (entropy, enthalpy, pressure, specific volume, internal energy etc ..)  

through prior knowledge of two other properties such as pressure and temperature.  

1. use thermodynamic tables to find the following variables.

a.enthalpy and entropy at the turbine entrance

h1=Enthalpy(Water;T=500;P=6000)

=3422KJ/kg

s1=Entropy(Water;T=500;P=6000)

=6.881KJ/kgK

b. enthalpy and ideal entropy at the turbine outlet

h2i=Enthalpy(Water;s=6.881;P=20)

=2267KJ/kg

s2i=s1=6.881KJ/kgK

2. uses the output power and the first law of thermodynamics to find the real enthalpy at the turbine's output

W=m(h1-h2)

h2=h1-W/m

h2r=3422-2626/3=2546.6KJ/kg

3.

find efficiency with the following equation

eficiency=\frac{h1-h2r}{h1-h2i}

\frac{h1-h2r}{h1-h2i}=\frac{3422-2546.6}{3422-2267} =0.758=75.8%

4.

find the real entropy at the turbine exit

s2=Entropy(Water;h=2546,6;P=20)=7.72KJ/kgK

5.Finally find the entropy generated, using the following equation

ΔS=m(s2-s1)=(3kg/s)(7.72  KJ/kgK-6.881 KJ/kgK)=2.517KW/K

6 0
3 years ago
Who had launched the highest number of internet satellites as of March 2020?
faltersainse [42]

Answer:

SpaceX

Explanation:

SpaceX successfully launches 60 more Starlink satellites as it continues towards 2020 service debut. SpaceX has launched another big batch of Starlink satellites, the low Earth orbit spacecraft that will provide connectivity for its globe-spanning high-bandwidth broadband internet network.

3 0
2 years ago
Which of these is least likely a step in replacing a failed compressor?
Akimi4 [234]

Answer:

D. Inspecting the muffler

Explanation:

HVAC/refigeration systems are sealed systems that use refrigerant not combustion. A muffler is found on combustion systems.

You would disconnect,  flush, seal, and possibly replace the condenser if the condenser is found to be failing.

4 0
3 years ago
Read 2 more answers
One kg of an idea gas is contained in one side of a well-insulated vessel at 800 kPa. The other side of the vessel is under vacu
laiz [17]

Answer:

Option C = internal energy stays the same.

Explanation:

The internal energy will remain the same or unchanged because this question has to do with a concept in physics or classical chemistry (in thermodynamics) known as Free expansion.

So, the internal energy will be equals to the multiplication of the change in temperature, the heat capacity (keeping volume constant) and the number of moles. And in free expansion the internal energy is ZERO/UNCHANGED.

Where, the internal energy, ∆U = 0 =quantity of heat, q - work,w.

The amount of heat,q = Work,w.

In the concept of free expansion the only thing that changes is the volume.

7 0
3 years ago
On diesel engines, data from ________ sensors are commonly used to adjust exhaust gas recirculation (EGR) rates.
e-lub [12.9K]

Answer:

Air mass sensors is the right answer i think

Explanation:

3 0
2 years ago
Other questions:
  • Air is compressed adiabatically from p1 1 bar, T1 300 K to p2 15 bar, v2 0.1227 m3 /kg. The air is then cooled at constant volum
    13·1 answer
  • First step in solving frames in to solve support reactions when looking at the frame as a whole. a)- True b)-False
    9·1 answer
  • Consider the following program:
    15·1 answer
  • Given a series of numbers as input, add them up until the input is 10 and print the total. Do not add the final 10. For example,
    7·1 answer
  • “In a trusting relationship, confidential information is kept confidential.” Explain what the limits to confidentiality are and
    14·1 answer
  • Solve the inequality below.Use the drop-down menus to describe the solution and its graph.
    12·1 answer
  • Advanced manufacturing does NOT serve the transportation, communications, or medical industries. Is this statement TRUE or FALSE
    11·2 answers
  • true or false: the types of building materials that’s should be used in a project does not constitute a conditional for projects
    13·2 answers
  • 10) A pressure sensor consisting of a diaphragm with strain gauges bonded to its surface has the following information in its sp
    12·1 answer
  • Technician A says a 50/50 mix of antifreeze and
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!