On a recent hike with a friend through hilly country, you decide to test the acoustics of the cliffs around you. Looking at your map, directly north of your position, you see a 250 m high cliff called Buzzard's Rest that is ≈ 177 m away. Looking due east, you see a 420 m escarpment called Owl's Perch that is = 364 m away. Due west is an 83 m high bluff called Traveller's Stand that is ≈ 470 m away; and, due south is a 720 m ridge called Hawk's Eye that is ≈ 893 m away. The temperature at this time of the day is ≈ 25°C. From your interests in drone flying and acoustics, you recall the formulas for the speed of sound in air and wave motion, and using this knowledge you begin to determine the following: a) Write down the formula and determine the speed of sound in the air at this temperature. b) Disregarding the echo from the other directions, if you face Buzzard's Rest and shout, how long will it take for you to hear the echo? c) Similarly, if you face Owl's Perch, Traveller's Stand, and Hawk's Eye, respectively, how long
On a recent hike with a friend through hilly country, you decide to test the acoustics of the cliffs around you. Looking at your map, directly north of your position, you see a 250 m high cliff called Buzzard's Rest that is ≈ 177 m away. Looking due east, you see a 420 m escarpment called Owl's Perch that is = 364 m away. Due west is an 83 m high bluff called Traveller's Stand that is ≈ 470 m away; and, due south is a 720 m ridge called Hawk's Eye that is ≈ 893 m away. The temperature at this time of the day is ≈ 25°C. From your interests in drone flying and acoustics, you recall the formulas for the speed of sound in air and wave motion, and using this knowledge you begin to determine the following: a) Write down the formula and determine the speed of sound in the air at this temperature. b) Disregarding the echo from the other directions, if you face Buzzard's Rest and shout, how long will it take for you to hear the echo? c) Similarly, if you face Owl's Perch, Traveller's Stand, and Hawk's Eye, respectively, how long
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