A source of sound of frequency 1000 Hz moves to the right with a speed of `32(m)/(s)` relative to the ground. To its right there is a reflecting surface moving to the left with a speed of `64(m)/(s)` relative to the ground. Take the speed of `64(m)/(s)`. Relative to the ground. Take the speed of sound in air to be `332(m)/(s)` and find
(a) The wavelength of the sound emitted in air by the source,
(b) the number of waves per second arriving at the reflecting surface,
(c ) The speed of the reflected waves and
(d) The wavelength of the reflected waves.

Explanation

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