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morpeh [17]
3 years ago
14

Kjhwe ,kenwif ujwfeowlwfwfwfw...

Engineering
2 answers:
Rashid [163]3 years ago
5 0
I’m so confused but ok
quester [9]3 years ago
4 0

Answer:

Unclear.

Explanation:

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A piston-cylinder device contains 1.329 kg of nitrogen gas at 120 kPa and 27 degree C. The gas is now compressed slowly in a pol
Shtirlitz [24]

Answer:-0.4199 J/k

Explanation:

Given data

mass of nitrogen(m)=1.329 Kg

Initial pressure\left ( P_1\right )=120KPa

Initial temperature\left ( T_1\right )=27\degree \approx 300k

Final volume is half of initial

R=particular gas constant

Therefore initial volume of gas is given by

PV=mRT

V=0.986\times 10^{-3}

Using PV^{1.49}=constant

P_{1}V^{1.49}=P_2\left (\frac{V}{2}\right )

P_2=337.066KPa

V_2=0.493\times 10^{-3} m^{3}

and entropy is given by

\Delta s=C_v \ln \left (\frac{P_2}{P_1}\right )+C_p \ln \left (\frac{V_2}{V_1}\right )

Where, C_v=\frac{R}{\gamma-1}=0.6059

C_p=\frac{\gamma R}{\gamma -1}=0.9027

Substituting values we get

\Delta s=0.6059\times\ln \left (\frac{337.066}{120}\right )+0.9027 \ln \left (\frac{1}{2}\right )

\Delta s=-0.4199 J/k

4 0
4 years ago
What are the standard procedures involved in the fixing/securing of cables?​
Sladkaya [172]

<u>Cable should be pre-cut and hung suspended for 48 hours to develop its most natural set and lay prior to installation.</u>

<u>Cable should be installed with, not against, its natural set. ... </u>

<u>Strain relief on either end will reduce conductor breakage at the flex points.</u>

4 0
2 years ago
A reagent added to the analyte solution that changes color when the reaction is complete
Novosadov [1.4K]

Answer:

rfvvvgfvbjjjjbvgggvvvhhjjvvvv

Explanation:

hhbbbjbnjjjjjknnnnbcfvhggcvbgffvvhbvbhbbbnbbhhhhj

6 0
3 years ago
Gshyevdnmdcicm gngjc
Len [333]

This is not a valid question. Please try again.

4 0
3 years ago
There are 20 forging presses in the forge shop of a small company. The shop produces batches of forgings requiring a setup time
Aleksandr-060686 [28]

Answer:

Considering the guidelines of this exercise.

The pieces produced per month are 504 000

The productivity ratio is 75%

Explanation:

To understand this answer we need to analyze the problem. First of all, we can only produce 2 batches of production by the press because we require 3 hours to set it up. So if we rest those 6 hours from the 8 of the shift we get 6, leaving 2 for an incomplete bath. So multiplying 2 batches per day of production by press we obtain 40 batches per day. So, considering we work in this factory for 21 days per month well that makes 40 x 21  making 840 then we multiply the batches for the pieces 840 x 600 obtaining 504000 pieces produced per month. To obtain the productivity ratio we need to divide the standard labor hours meaning 6 by the amount of time worked meaning 8. Obtaining 75% efficiency.

4 0
4 years ago
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