1. On the planet Arrakis, a male ornithoid is flying toward his stationary mate at 25.0 m/s while singing at a frequency of 1200 Hz. If the female hears a tone of 1240 Hz, what is the speed of sound in the atmosphere of Arrakis?
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2. While sitting in your vehicle out in the boonies, you see your friend, who just so happens to have the exact same make/model of vehicle as you, driving your way. You blow your horn which has a frequency of 260 Hz. Your friend blows their horn in response. You hear a beat frequency of 6 Hz. How fast is your friend approaching you (in m/s)? You may assume v = 344 m/s.
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3. While sitting in your vehicle out in the boonies, you see your friend, who just so happens to have the exact same make/model of vehicle as you, driving your way at 7/8 m/s. You blow your horn which has a frequency of 260 Hz. What frequency does your friend hear your horn at? You may assume v = 344 m/s.
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4. differ. are the same. not enough info.
Consider the two scenarios: (A) A stationary object produces a sound at a fixed frequency f. Another object moves toward the source with a fixed velocity v. (B) An object producing a sound of frequency f moves towards a stationary observer with a velocity v. The perceived frequency of sound is for scenarios (A) and (B)
differ.
are the same.
not enough info.

5. A stationary source emits a constant sound of frequency of 1300 Hz
A stationary source emits a constant sound of frequency of 1300 Hz. You travel towards the source at 25 m/s. At what frequency do you hear the sound? (Speed of air is 344 m/s).
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6. A source emitting a constant sound of frequency of 1300 Hz travels towards stationary you at 25 m/s. At what frequency do you hear the sound? (Speed of air is 344 m/s).
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