abbyphillips1649 abbyphillips1649
  • 04-03-2018
  • Physics
contestada

With what speed must you approach a source of sound to observe a 25% change in frequency?

Respuesta :

Аноним Аноним
  • 04-03-2018
sound source is at rest, you are moving with velocity v, f = frequency, c = speed of sound:

f = f0(1 + v/c)

115 = 100(1 + v/343)
115 = 100 + 100v/343
15 = 100v/343
v = 15*343/100
v = 51,45 m/s
Answer Link

Otras preguntas

story problem questions for newtons 3rd law
the length of a soccer field; 120. m (three significant figures), to inches given the following equivalences: 1 in 2.54 cm = 1 ft = 12 in
How do you handle problem and stress in your life?
What conversion factor between cubic inches and cubic yards
can someone help me with this
how long will it take an investment of $5000 to triple if the investment earns interest at the rate of 5% per year compounded daily?
I’ll give points + brainalist!!
If your front lawn is 18.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1450 new snowflakes every minute, how much snow, in kilograms,
what is the value of 64 ⅔ ?​
The equation 7(v-5)=-21 is solved in several steps below. For each step, choose the reason that best justifies it.