Question

rocket on the ground viberates at an audible frequency of 486 Hz. what is the frequency heard by an observer while the rocket is in flight and recedes away at 247 m/s from the stationary observer

Answer 1

The frequency heard by an observer while the rocket is in flight and recedes away is approximately 239.90 Hz.

Step-by-step explanation:

The frequency heard by an observer while the rocket is in flight and recedes away can be found using the Doppler effect formula:

f' = f * (v + vr)/(v + vs)

Where:

• f' is the frequency heard by the observer
• f is the frequency of the rocket on the ground
• v is the speed of sound (343.00 m/s)
• vr is the velocity of the rocket receding away (-247 m/s)
• vs is the velocity of the stationary observer (0 m/s)

Substituting the given values, we have:

f' = 486 * (343.00 - 247)/(343.00 + 0) = 239.90 Hz

The frequency heard by the observer while the rocket is in flight and recedes away is approximately 239.90 Hz.