A bridge crosses a river. The vertical displacement, x feet from the beginning of the bridge, during an earthquake is given by d = f(x,t) where d is in feet, r is in yards, and t is in seconds. a) What are the units on ? Answer: b) What are the units on ? Answer:

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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**A bridge crosses a river. The vertical displacement, \(x\) feet from the beginning of the bridge, during an earthquake is given by \(d = f(x,t)\) where \(d\) is in feet, \(x\) is in yards, and \(t\) is in seconds.**

a) What are the units on \(\frac{\partial^2 d}{\partial t^2}\)? Answer: \_\_\_\_\_\_\_\_\_\_

b) What are the units on \(\frac{\partial^2 d}{\partial x \partial t}\)? Answer: \_\_\_\_\_\_\_\_\_\_
Transcribed Image Text:**A bridge crosses a river. The vertical displacement, \(x\) feet from the beginning of the bridge, during an earthquake is given by \(d = f(x,t)\) where \(d\) is in feet, \(x\) is in yards, and \(t\) is in seconds.** a) What are the units on \(\frac{\partial^2 d}{\partial t^2}\)? Answer: \_\_\_\_\_\_\_\_\_\_ b) What are the units on \(\frac{\partial^2 d}{\partial x \partial t}\)? Answer: \_\_\_\_\_\_\_\_\_\_
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