Destructive Interference with a Pebble

AI Thread Summary
To achieve destructive interference with two pebbles dropped in a lake, the second pebble must be dropped at a specific time that corresponds to the phase difference needed for cancellation. The first pebble creates ripples at a frequency of 0.25 Hz, which can be analyzed using wave equations like v = fλ. Understanding how the waves from both pebbles interact is crucial, as they must be out of phase for destructive interference to occur. The timing of the second drop is essential to ensure the waves align correctly for cancellation. Engaging with the problem can clarify the necessary conditions for achieving the desired interference effect.
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Homework Statement



A pebble is dropped in a lake; and it produces ripples with a frequency of .25 Hz. When should a second pebble be dropped at the same place to produce destructive interference

Homework Equations


I'm not even sure if these apply, but they are the only formulas I know.

v=f\lambda or v=\lambda/t

The Attempt at a Solution



I have no idea how to solve this problem
 
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What will the second pebble's wave look like? How do these two waves "add up"?

In what way do you want them to "add up" in order to get destructive interference
 
I get it!
wow.. definitely over thought that one.
Thank you for the thought provoking questions.
 

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