Print Calculator --Penodic able Question 35 of 37 Map Sapling Learning macmillan

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Print Calculator --Penodic able Question 35 of 37 Map Sapling Learning macmillan learning The figure below is a pressure versus volume graph where the different curves represent different processes done on a gas. Starting at the origin to point 1, the pressure and volume are increased to 2736 Pa and 3.91 m respectively. From 1 to 2 the gas expands at constant pressure to a volume of 6.91 m3. From 2 to 3 the pressure rises to 4164 Pa. And finally from 3 to 4 the gas expands again to 10.51 m3. Using the ranking module, rank the curves from the most positive to the most negative amount of work done on the gas Most Positive Work 4 Most Negative Work 0-1 3-4 1-2 2-3 What is the total work done on the gas? V (cubic Number Previous Give Up & View Solution Check Answer Next Exit Hint

Explanation / Answer

a)

Most positive work --> area under curve (negative)

so

2-3 = 0 work

1-2 = second most negative work

0-1 = least negative work

3-4 = most negative work

b)

Total W:

W0-1 = 1/2*b1h1 = 1/2*(2736-0)/(3.91-0) = 349.8

W1-2 = b2*h2 = 2736*(6.91-3.91) = 8208

W2-3 = 0

W3-4 = b4*h4 = 4164*(10.51-6.91) = 14990.4

Wtotal = 349.8 + 8208+14990.4

Wtotal = 23548.2

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