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Novosadov [1.4K]
3 years ago
12

What is a construction worker with limited skills called?

Engineering
1 answer:
Romashka [77]3 years ago
5 0
A disabled person because they can’t do work
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A vertical piston-cylinder device initially contains 0.2 m3 of air at 20°C. The mass of the piston is such that it maintains a c
Ann [662]

Answer:

Amount of air left in the cylinder=m_{2}=0.357 Kg

The amount of heat transfer=Q=0

Explanation:

Given

Initial pressure=P1=300 KPa

Initial volume=V1=0.2m^{3}

Initial temperature=T_{1}=20 C

Final Volume=V_{2}=0.1 m^{3}

Using gas equation

m_{1}=((P_{1}*V_{1})/(R*T_{1}))

m1==(300*0.2)/(.287*293)

m1=0.714 Kg

Similarly

m2=(P2*V2)/R*T2

m2=(300*0.1)/(0.287*293)

m2=0.357 Kg

Now calculate mass of air left,where me is the mass of air left.

me=m2-m1

me=0.715-0.357

mass of air left=me=0.357 Kg

To find heat transfer we need to apply energy balance equation.

Q=(m_{e}*h_{e})+(m_{2}*h_{2})-(m_{1}*h_{1})

Where me=m1-m2

And as the temperature remains constant,hence the enthalpy also remains constant.

h1=h2=he=h

Q=(me-(m1-m2))*h

me=m1-me

Thus heat transfer=Q=0

6 0
3 years ago
Differnence between boat and ship​
Blababa [14]

Answer:

a ship is a large vessel intended for oceangoing or at least deep-water transport, and a boat is anything else." Basically, a ship can carry a boat, but a boat cannot carry a ship

5 0
3 years ago
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Choose the statement that correctly describes the circuit below. image is not found a. The above circuit is invalid because nMOS
OleMash [197]

The statement that correctly describes the circuit is the circuit provided is an example of a CMOS circuit.

<h3>What is a CMOS circuit?</h3>

The CMOS circuit is a term that is often known as "Complementary Metal Oxide Semiconductor."

This is known to be a machine that create integrated circuits and it is one that is often seen a a lot of electronic component and as such, the the circuit provided is an example of a CMOS circuit.

Learn more about circuit  from

brainly.com/question/2969220

#SPJ1

8 0
2 years ago
PLEASE HURRY!!!
Marizza181 [45]

Answer:

A

Explanation:

I just took the test. Plus I'm built different ;]

5 0
2 years ago
Find the velocity and rate of flow of water through a rectangular channel of 6m wide and 3m deep when it's running full. The cha
Elza [17]

Answer:

V = 1.5062 m/s

Explanation:

look to the photos

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3 years ago
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