The water height in a certain tank was measured at several times with no inflow applied. See

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The water height in a certain tank was measured at several times with no inflow applied. See Figure 7.4.3. The resistance R is a linearized resistance. The data are given in the table. The tank's bottom area is A = 6 ft2,
a. Estimate the resistance R.
b. Suppose the initial height is known to be exactly 20.2 ft. How does this change the results of part (a)?
Time (sec) Height (ft)
0.................................... 20.2
300...............................17.26
600................................14.6
900................................12.4
1200...............................10.4
1500...............................9.0
1800...............................7.6
2100...............................6.4
2400...............................5.4
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System Dynamics

ISBN: 978-0073398068

3rd edition

Authors: William Palm III

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