Which of the following BEST represents the causes of stiff muscles?

Air at 400 kPa, 980 K enters a turbine operating at steady state and exits at 100 kPa, 670 K. Heat transfer from the turbine occ

AURORKA [14]

Answer:

a) $w_{out} = 281.55\,\frac{kJ}{kg}$ , b) $s_{gen} = 0.477\,\frac{kJ}{kg\cdot K}$

Explanation:

a) The process within the turbine is modelled after the First Law of Thermodynamics:

$-q_{out} - w_{out} + h_{in}-h_{out} = 0$

$w_{out} = h_{in} - h_{out}-q_{out}$

$w_{out} = c_{p}\cdot (T_{in}-T_{out})-q_{out}$

$w_{out} = \left(1.005\,\frac{kJ}{kg\cdot K}\right)\cdot (980\,K-670\,K)-30\,\frac{kJ}{kg}$

$w_{out} = 281.55\,\frac{kJ}{kg}$

b) The entropy production is determined after the Second Law of Thermodynamics:

$-\frac{q_{out}}{T_{surr}} + s_{in}-s_{out} + s_{gen} = 0$

$s_{gen} = \frac{q_{out}}{T_{surr}}+s_{out}-s_{in}$

$s_{gen} = \frac{q_{out}}{T_{surr}}+c_{p}\cdot \ln\left(\frac{T_{out}}{T_{in}} \right)$

$s_{gen} = \frac{30\,\frac{kJ}{kg} }{315\,K} + \left(1.005\,\frac{kJ}{kg\cdot K} \right)\cdot \ln\left(\frac{980\,K}{670\,K} \right)$

$s_{gen} = 0.477\,\frac{kJ}{kg\cdot K}$

3 0

3 years ago

Electricity is the flow of electrons from a negatively charged

TiliK225 [7]

Yes.

electric current refers to directional negative-to-positive electrons from one atom to the next. Liquid conductors and gas conductors, electric current refers to electrons and protons flow in the opposite direction.

6 0

1 year ago

Technician A says that the enable criteria are the criteria that must be met before the PCM completes a monitor test. Technician

DENIUS [597]

Answer:

"A"

Explanation:

5 0

3 years ago

Write a program that randomly chooses between three different colors for displaying text on the screen. Use a loop to display tw

11Alexandr11 [23.1K]

Answer:

INCLUDE Irvine32.inc

.data

msgIntro byte "This is Your Name's fourth assembly extra credit program. Will randomly",0dh,0ah

byte "choose between three different colors for displaying twenty lines of text,",0dh,0ah

byte "each with a randomly chosen color. The color probabilities are as follows:",0dh,0ah

byte "White=30%,Blue=10%,Green=60%.",0dh,0ah,0

msgOutput byte "Text printed with one of 3 randomly chosen colors",0

.code

main PROC

;

//Intro Message

mov edx,OFFSET msgIntro ;intro message into edx

call WriteString ;display msgIntro

call Crlf ;endl

call WaitMsg ;pause message

call Clrscr ;clear screen

call Randomize ;seed the random number generator

mov edx, OFFSET msgOutput;line of text

mov ecx, 20 ;counter (lines of text)

L1:;//(Loop - Display Text 20 Times)

call setRanColor ;calls random color procedure

call SetTextColor ;calls the SetTextColor from library

call WriteString ;display line of text

call Crlf ;endl

loop L1

exit

main ENDP

;--

setRanColor PROC

;

; Selects a color with the following probabilities:

; White = 30%, Blue = 10%, Green = 60%.

; Receives: nothing

; Returns: EAX = color chosen

;--

mov eax, 10 ;range of random numbers (0-9)

call RandomRange ;EAX = Random Number

.IF eax >= 4 ;if number is 4-9 (60%)

mov eax, green ;set text green

.ELSEIF eax == 3 ;if number is 3 (10%)

mov eax, blue ;set text blue

.ELSE ;number is 0-2 (30%)

mov eax, white ;set text white

.ENDIF ;end statement

ret

setRanColor ENDP

6 0

3 years ago

Given the scope of the problems and cheating exposed in the VW emissions cheating scandal, there's reason to believe the scandal

Soloha48 [4]

Answer:

False

Explanation: There is no reason to believe that it will spread to gasoline engines and carbon dioxide emissions, which are considered a prime cause of climate change. It scandal was specifically concerned with diesel engines as volkswagen during the year 2015 had a major push and requirement to sell diesel cars in the US, the requirement was backed by a huge marketing campaign advertising its cars' low emissions.

The issue was discovered by the Environmental protection agency of the United States of America and Volkswagen has taken reasonable precautions and responsibilities for their Emission cheats.

5 0

3 years ago