(6) Let W be the region in R³ inside x² + y² = 1 that is below z = 3-²-² and above √² + y². More precisely, z = V W = {(x, y, z): x² + y² ≤ 1, √√² + y² ≤ x ≤3-2²-y²}. (a) Sketch the region W. (b) Consider a fluid of constant density u(x, y, z) - 5 (measured in g/in³) flowing with velocity v(x, y, z) = (3xy² - e², y³ – x cos(2), z³ - y²) measured in in/s. Use the appropriate version of Stokes theorem to find the total amount of fluid (in the boundary of W flowing in the inward direction after 2 seconds.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter8: Further Techniques And Applications Of Integration
Section8.3: Volume And Average Value
Problem 11E
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(6) Let W be the region in R³ inside x² + y² = 1 that is below z = 3-²-² and above
√² + y². More precisely,
z = V
W = {(x, y, z): x² + y² ≤ 1, √√² + y² ≤ x ≤3-2²-y²}.
(a) Sketch the region W.
(b) Consider a fluid of constant density μ(x, y, z) - 5 (measured in g/in³) flowing with velocity
v(x, y, z) = (3ry² - e², y³ – x cos(2), z³ - y³)
measured in in/s. Use the appropriate version of Stokes theorem to find the total amount of fluid (in
grams) that crosses the boundary of W flowing in the inward direction after 2 seconds.
(c) What was the sign in your answer and what is the physical interpretation for this sign?
Transcribed Image Text:(6) Let W be the region in R³ inside x² + y² = 1 that is below z = 3-²-² and above √² + y². More precisely, z = V W = {(x, y, z): x² + y² ≤ 1, √√² + y² ≤ x ≤3-2²-y²}. (a) Sketch the region W. (b) Consider a fluid of constant density μ(x, y, z) - 5 (measured in g/in³) flowing with velocity v(x, y, z) = (3ry² - e², y³ – x cos(2), z³ - y³) measured in in/s. Use the appropriate version of Stokes theorem to find the total amount of fluid (in grams) that crosses the boundary of W flowing in the inward direction after 2 seconds. (c) What was the sign in your answer and what is the physical interpretation for this sign?
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