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ycow [4]
3 years ago
15

A 0.40-m3 insulated piston-cylinder device initially contains 1.3 kg of air at 30°C. At this state, the piston is free to move.

Now air at 500 kPa and 70°C is allowed to enter the cylinder from a supply line until the volume increases by 50%. Using constant specific heats at room temperature, determine (a) the final temperature, (b) the amount of mass that has entered, and (d) the work done; and (d) entropy generation

Engineering
1 answer:
Setler79 [48]3 years ago
6 0

Answer:

(a) The Final Temperature is 315.25 K.

(b) The amount of mass that has entered  0.5742 Kg.

(c) The work done is 56.52 kJ.

(d) The entrophy generation is 0.0398 kJ/kgK.

Explanation:

Explanation is in the following attachments.

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Answer:

minimum electric power consumption of the fan motor is 0.1437 Btu/s

Explanation:

given data

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air density = 0.075 lbm/ft³

to find out

minimum electric power consumption of the fan motor

solution

we know that energy balance equation that is express as

E in - E out  = \frac{dE \ system}{dt}    ......................1

and at steady state  \frac{dE \ system}{dt} = 0

so we can say from equation 1

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E in =  \rho A V \frac{V^2}{2}  

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minimum electric power consumption of the fan motor is 0.1437 Btu/s

5 0
3 years ago
A budding electronics hobbyist wants to make a simple 1.0-nF capacitor for tuning her crystal radio, using two sheets of aluminu
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Answer:

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b. Area of Aluminum Foil needed = 0.45m²

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Explanation:

a.

First, we need to calculate the distance between two plates.

This is given by

d = Kε0A/C

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K = 3

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So, d = (3 * 8.854 * 10^-12 C²/Nm² * 0.0616) / (1 * 10^-12F)

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d = 1.64mm

Now, that the distance has been solved.

The Number of Sheets, N is given by

N = d/d,sheet where d, sheet =the sheet thickness = 0.2mm

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b.

Here, she's changed the diameter of the sheets to 12mm

Well make use of the formula in (a) above

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In part A you are asked to write the pseudocode for the program. In part B you are asked to write the syntax of the code for the
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Answer:

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///////////////////////////////////////////////////////////////

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   cin>>page;

   cout<<endl;

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                           break;

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                   }

               }

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       }

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   if (isDog == true)

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