HW 8:Waves and Sound Problem 15.47 7 of 10 Part A 700 Hz while cruising down the

Question

HW 8:Waves and Sound Problem 15.47 7 of 10 Part A 700 Hz while cruising down the highway at 88 km/h. The speed of sound in the air is 343 m/s What is the frequency heard by a person standing beside the road in front of the car? Express your answer to two significant figures and include the appropriate units Value Units Part B What is the frequency heard by a person standing beside the road behind the car? Express your answer to two significant figures and include the appropriate units. Value Units Request Answer

Explanation / Answer

v = 88 km/s = 88*5 / 18 = 24.444 m/s

Speed of sound = c = 343 m/s

therefore,

a) Frequency in front of car = 700 * (343 + 24.444) / 343

f = 749.88 Hz

b) Frequency behind the car = 700*(343 - 24.444) / 343

f = 650.11 Hz

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.