Water tank and wave interference question?

AI Thread Summary
To minimize wave action in the water tank experiment, one should stand 1.25 meters from the perpendicular bisector of the openings. This position corresponds to a path length difference of 1.5 meters, which is half the wavelength, leading to destructive interference. A participant initially calculated the position as 0.94 meters but was corrected by others who confirmed the 1.25-meter solution. The discussion highlights the importance of understanding wave interference principles in solving such problems. Accurate calculations are crucial for determining the correct standing position.
Kratos321
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Homework Statement



In a large water tank experiment, water waves are generated with straight, parallel wave fronts, 3.0m apart. The wave fronts pass through two openings 5.0m apart in a long board. The end of the tank is 3.0m beyond the board. Where should you stand, relative to the perpendicular bisector of the line between the openings, if you want to receive little or not wave action?


Ok, so I tried to do this problem and got 0.94 m as my answer. Can someone please confirm this because the answer book says 1.25m.
 
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1.25 m is about right. At that point, the path length difference is 1.5 m, which is half the wavelength. Maybe you made an algebra error somewhere?
 
Kratos321 said:
Ok, so I tried to do this problem and got 0.94 m as my answer. Can someone please confirm this because the answer book says 1.25m.

How did you get that result?

ehild
 
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