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zvonat [6]
3 years ago
12

What is the change of entropy for a heat engine using 500.0j at 20.0c

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
8 0

The formula to find change in entropy is given by :

Change in entropy = \frac{Q}{T}

where Q is change in heat and T is temperature.

We are given Q = 500 joule and T = 20 degree C

Plugging these values in the formula,

Change in entropy = \frac{500}{20}

We get change in entropy = 25 J/Celsius.


Natasha_Volkova [10]3 years ago
3 0
1.71 J/K 
hope it helps :D!!
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Pls help me answer my worksheet
bearhunter [10]
Step one know that across from 128 is 128 because of vertical angles
step two a straight line =180 so 128 -180 = 52
step three know you know 3k+4=52 so subtract 4 from 52 and that gives you 48 then divide by 3 to find k and 48/3 is 16
so k +16
because 16x3 is 48 then add 4 which is 52 and 52 plus 128 is 180
8 0
3 years ago
What is the square root of 24? show your steps.
yawa3891 [41]

Step-by-step explanation:

√24= √(<u>2×2</u>×2×3)

=2√2×3

=2√6

8 0
3 years ago
An architect is making a scale model of a building. The model is 18.5 inches wide and 36.5 inches tall. If the actual building i
Nastasia [14]

Answer:

The height of the building is 730 feet.

Step-by-step explanation:

370 x 12 = 4,440 inches

4,440 ÷ 18.5 = 240 inches

240 x 36.5 = 8,760 inches = 730 feet

3 0
3 years ago
Hep asappppppppppppp
schepotkina [342]

Answer:

(6 , -1)

Step-by-step explanation:

2x+  y  = 11   ----------------(I)

y = 11 - 2x --------------------(II)

\frac{1}{2}x - 5y = 8

Multiply the whole equation by 2

2*\frac{1}{2}x -2*5y = 2*8

x - 10y = 16 --------------------(III)

Substitute y = 11- 2x in equation (III)

x - 10(11 - 2x) = 16

x - 110 + 20x = 16

21x - 110 = 16

21x = 16 +110

21x = 126

x = 126/21

x = 6

Plugin x = 6 in equation (II)

y = 11 - 2*6

y = 11 - 12

y = -1

5 0
2 years ago
How many solutions does this system have? 5y = x - 9 4x - 10y = 18<br><br> plzzz i need answer now
Veseljchak [2.6K]

l o l  

o k

s o

5x=x-9  and 4x-10y=8

lets graph that on desmos cause I'm too lazy to subsitute it .

it has one answer

7 0
3 years ago
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