Home
Class 12
PHYSICS
An ambulance with a siren emitting a whi...

An ambulance with a siren emitting a whine at 1620 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1590 Hz. How fast is the ambulance moving?

Text Solution

AI Generated Solution

To solve the problem, we will use the Doppler effect formula for sound. The Doppler effect describes how the frequency of a wave changes for an observer moving relative to the source of the wave. ### Step-by-Step Solution: 1. **Identify the Given Values**: - Frequency of the siren (source frequency, \( f_s \)) = 1620 Hz - Frequency heard by the cyclist (observed frequency, \( f_o \)) = 1590 Hz - Velocity of the cyclist (observer's velocity, \( v_o \)) = 2.44 m/s ...
Promotional Banner

Topper's Solved these Questions

  • WAVE - II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (SINGLE CORRECT CHOICE TYPE)|35 Videos
  • WAVE - II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (MORE THAN ONE CORRECT CHOICE TYPE)|6 Videos
  • WAVE - II

    RESNICK AND HALLIDAY|Exercise CHECKPOINTS|4 Videos
  • VECTORS

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS|39 Videos
  • WAVES-I

    RESNICK AND HALLIDAY|Exercise Practice Questions (Integer Type)|4 Videos

Similar Questions

Explore conceptually related problems

An ambulance fitted with a siren of v = 400 Hz is going towards a vertical wall at a speed of 54 km/hr. A person standing on the road, behind the ambulance, listens to the siren sound coming from the ambulance as well as that coming after reflection from the wall. Calculate the apparent frequency of the sound wave (a) directly coming from the siren to the person, and (b) coming after reflection from the wall Take, speed of sound = 340 m/s

At the insutant the traffic light turns green a car starts with a constant acc. 2 m//s^(2) . At the same instant a truck, travelling with a constant speed of 10 m//s , overtakes and passes the car. (a) How far beyond the starting point will the car overtake the truck ? (b) How fast will the car be travelling at that instant? (c) Draw s//t curves for each vehicle.

An ambulance is traveling down a highway at 34.5 ms^(-1) . The ambulance having siren emits sound of frequency 380 Hz. If a passenger in a car travelling with the speed of 26.4 ms^(-1) in the opposite direction as the car approaches the ambulance and after the two vehicles passed each other, then find the frequency heared by that passenger. Take speed of sound in air is 343 ms^(-1)

Standing at a crosswalk, you hear a frequency of 560 Hz from the siren of an approaching ambulance, After the ambulance passes, the observed frequency of the siren is 480 Hz. Determine the ambulance's speed from these observations. Speed of sound =343(m)/(s) .

Two sources of sound moving with same speed v and emitting frequency of 1400 Hz are moving such that one source s_1 is moving towards the observer and s_2 is moving away from observer. If observer hears beat frequency of 2 Hz. Then find the speed of source. Given v_(sound) gt gt v_(source) and v_(sound) = 350m/s

An ambulance blowing a siren of frequency 700 Hz is moving with a speed of 2m/s towards a vertical wall. The speed of sound is 352 m/s. Then the frequency of the reflected sound as heard by the driver of ambulance would be

A siren emitting a sound of frequency 2000 Hz moves away from you towards a cliff at a speed of 8 m/s. (a) What is the frequency of the sound you hear coming directly from the siren. (b) What is the frequency of sound you hear reflected off the cliff. Speed of sound in air is 330(m)/(s) .

A train moving at 15 m/sec takes 20 seconds to pass a cyclist moving in the same direction as that of the train. How much time will be train need to pass the cyclist, if the cyclist moves in a direction opposite to that of the train and if the speed of the cyclist is 5m/sec and the length of the cycle is 1 m? 9. 95 s e c b. 10 s e c c. 10. 05 s e c d. 12 s e c

Two train whistles have identical frequencies of 180 Hz. When one train is at rest in the station and the other is moving nearby, a passenger standing on the station platform hears beats with a frequency of 2.00 beats/s when the shistles operate together. What are the two possible speeds and direction the moving train can have? speed of sound is 343 m/s.

A plice siren emits a sound wave of frequency 440 Hz. The speed of sound is 332 m/s. if the siren is moving away from the listerner with a speed of 18 m/s relative to the air and the listerner is moving towards the siren with a speed of 68 m/s relative to the air, then what frequency does the listern hear?

RESNICK AND HALLIDAY-WAVE - II-PROBLEMS
  1. You have five tuning forks that oscillate at close but different reson...

    Text Solution

    |

  2. Figure shows two point sources S1 and S2 that emit sound of waveleng...

    Text Solution

    |

  3. An ambulance with a siren emitting a whine at 1620 Hz overtakes and pa...

    Text Solution

    |

  4. When the door of the Chapel of the Mausoleum in Hamilton, Scotland, is...

    Text Solution

    |

  5. A stationary detector measures the frequency of a sound source that fi...

    Text Solution

    |

  6. Figure shows two isotropic point sources of sound, S1 and S2 The sourc...

    Text Solution

    |

  7. Approximately a third of people with normal hearing have ears that con...

    Text Solution

    |

  8. Two loud speakers are located 3.35 m apart on an outdoor stage. A list...

    Text Solution

    |

  9. In Fig. , two speakers separated by distance d1 = 2.00 m are in phase....

    Text Solution

    |

  10. In Fig., sound waves A and B, both of wavelength lamda , are initially...

    Text Solution

    |

  11. A girl is sitting near the open window of a train that is moving at a ...

    Text Solution

    |

  12. In Fig., S is a small loud speaker driven by an audio oscillator with ...

    Text Solution

    |

  13. The pressure in a traveling sound wave is given by the equation Del...

    Text Solution

    |

  14. A well with vertical sides and water at the bottom resonates at 7Hz a...

    Text Solution

    |

  15. A column of soldiers, marching at 100 paces per minute, keep in step w...

    Text Solution

    |

  16. From two sources, sound waves of frequency 270 Hz are emitted in phase...

    Text Solution

    |

  17. Suppose that the sound level of a conversation is initially at an angr...

    Text Solution

    |

  18. A sound wave in a fluid medium is reflected at a barrier so that a sta...

    Text Solution

    |

  19. A train approachign a railway crossing at a speed of 120 kmh^-1 sounds...

    Text Solution

    |

  20. (a) A source of sound S and a detector D are placed at some distance f...

    Text Solution

    |