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4 years ago

Mnsdcbjksdhkjhvdskjbvfdfkjbcv hjb dfkjbkjfvvfebjkhbvefgjdf

Engineering

2 answers:

Julli [10]4 years ago

8 0

Answer:

ik true eedcggftggggfffff

kati45 [8]4 years ago

7 0

um OK thanks i guess

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Carbon dioxide contained in a piston–cylinder device is compressed from 0.3 to 0.1 m3. During the process, the pressure and volu

Lunna [17]

Answer:

$W = -6.5 Kpa m^6 (\frac{1}{0.1 m^3}- \frac{1}{0.3 m^3})= -6.5 Kpa m^6 (6.66 m^-3) =-43.33 Kpa m^3 = -43.33 KJ$

Explanation:

For this case we know the following info :

$V_i = 0.3 m^3$ represent the initial volume

$V_f = 0.1 m^3$ represent the final volume

We know that the pressure and volume are related with the following expression:

$P = aV^{-2}= \frac{a}{V^2}$

Where a is a constant given $a = 6.5 Kpa m^6$

And we need to calculate the work associated to this process.

We have a compression, and by definition the work is defined with the following general expression:

$W = \int_{V_i}^{V_f} P dV$

If we replace the expression for P we got:

$W = \int_{V_i}^{V_f} a V^{-2} dV$

If we integrate we got:

$W = -a (\frac{1}{V}) \Big|_{V_i}^{V_f}$

Using the fundamental theorem of calculus we have:

$W = -a (\frac{1}{V_f} -\frac{1}{V_i})$

And replacing the values we got:

$W = -6.5 Kpa m^6 (\frac{1}{0.1 m^3}- \frac{1}{0.3 m^3})= -6.5 Kpa m^6 (6.66 m^-3) =-43.33 Kpa m^3 = -43.33 KJ$

5 0

4 years ago

Determine the number of sheets of plywood needed to lay the subfloor of a building that measures 24' wide and 64' long. what is

skad [1K]

Answer:

48 pieces
1536 ft²

Explanation:

The 24' dimension is 6 times the 4' dimension of a 4×8 ft piece of plywood. The 64' dimension is 8 times the 8' dimension of a 4×8 ft piece of plywood.

Hence, it will take 6×8 = 48 pieces of plywood to cover the floor.

The area of the floor is the product of its dimensions:

24' × 64' = 1536 ft²

4 0

3 years ago

Read 2 more answers

Design an op amp circuit to average the input of six sensors used to measure temperature in restaurant griddles for a large fast

Marina CMI [18]

Answer:

See the attached file for the design.

Explanation:

Find attached for the explanation.

3 0

4 years ago

What is noise definition in physics<br><br>

Bess [88]

Answer:

Noise or sound is the energy produced by sounding object which can be felt by our hearing organs .

Explanation:

Noise is produced by vibration in a body.

4 0

3 years ago

Tech A says you can find the typical angle of a V-block engine by dividing the number of cylinders by 720

Lady_Fox [76]

Answer:

Tech A is correct

Explanation:

Tech A is right as its V- angle is identified by splitting the No by 720 °. Of the piston at the edge of the piston.

Tech B is incorrect, as the V-Angle will be 720/10 = 72 for the V-10 motor, and he says 60 °.

8 0

3 years ago