Physics

Problem

A large vertical wall coincides with the

y

-axis. A sound source is at point

S(4,0)\,\text{m}

and a listener is at point

L(4,3)\,\text{m}

, where coordinates are in metres. The sound must reach

L

after a single reflection from the wall. At what

y

-coordinate (height above the origin) should the sound strike the wall? a)

0.75\,\text{m}

3.00\,\text{m}

1.50\,\text{m}

2.25\,\text{m}