Yes, the wavelength was irrelevant. It was in the question just to trick us! It turned out that this is a velocity = displacement/time problem. I used that formula for the metal pipe, using pi*Radius as displacement. So the rearranged formula is Time = pi*Radius/Velocity. Due to time and radius...
I stumbled on this question while studying sound waves today, and it has got me stumped. I've been thinking this through for hours, to no avail. It goes: A park has a circular fence with a metal pipe as the top rail. If the fence is hit with a hammer it produces a sound of 350 Hz. At a point...
Your answer to the magnitude (In this case distance) for 'B' is correct, but to state that the direction of A+B is south-east is not accurate, though you are close. To accurately state the direction of A+B you need to know the angle between the vector A and the resultant A+B. As A is the...