6) The sound from the whistle of a truck moving at 17.0 m/s toward a cliff...

Question

Question

science physics

Answer 1

Answer #1

Frequency heard of reflected sound f2 = f0*v/(v-vs) *(v+vs)/v

= 2267*(343+17)/(343-17) = 2503 Hz

change = 2503 - 2267 = 236 Hz option A answer

Answer 2

Similar Homework Help Questions

A truck moving at 45 m/s passes a police car moving at 36 m/s in the...

A truck moving at 45 m/s passes a police car moving at 36 m/s in the opposite direction. if the frequency of the siren is 500 Hz relative to the police car, what is the frequency heard by an observer in the truck after the police car passes the truck? (The speed of sound in air is 343 m/s.)
An automobile is moving at 30.0 m/s and is driving towards a whistle that indicates it...

An automobile is moving at 30.0 m/s and is driving towards a whistle that indicates it is lunch time at a factory; the whistle has a frequency of 50 Hz. (a) If the speed of sound in air is 340 m/s, what is apparent frequency of the whistle as heard by the driver? (b) Repeat for the case of the car leaving the factory at the same speed. On a set of highland bagpipes, there are two tenor drones (the...
If a 1.00-kHz sound source moves at a speed of 53.0 m/s toward a listener who...

If a 1.00-kHz sound source moves at a speed of 53.0 m/s toward a listener who moves at a speed of 28.0 m/s in a direction away from the source, what is the apparent frequency heard by the listener? (Use 343 m/s as the speed of sound in air.) A) 795 Hz B) 937 Hz C) 1000 Hz D) 1086 Hz E) 1279 Hz

A train is moving at 23 m/s east when it blasts its horn at a frequency...

A train is moving at 23 m/s east when it blasts its horn at a frequency of 164 Hz. what frequency is heard by the driver of a car moving east at 15 m/s along a road parallel to the tracks? the speed of sound is 343 m/s.
9. An ambulance truck emits a sound with a frequency of 800 Hz. (the speed of...

9. An ambulance truck emits a sound with a frequency of 800 Hz. (the speed of sound in air at 20 Celsius is 343 m/s). (a) What is the frequency detected by a stationary observer if the ambulance truck moving 30 m/s toward the observer? (b) What frequency will b detected if the ambulance is moving 30 m/s away from the observer?
The siren of a fire engine that is driving northward at 30.0 m/s emits a sound...

The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2020 Hz. A truck in front of this fire engine is moving northward at 17.0 m/s. What is the frequency of the siren's sound that the fire engine's driver hears reflected from the back of the truck? What wavelength would this driver measure for these reflected sound waves?

A motorcyclist is moving 24.5 m/s towards a stationary siren, and hears a 894 Hz sound....

A motorcyclist is moving 24.5 m/s towards a stationary siren, and hears a 894 Hz sound. What is the frequency of the siren when the cyclist is stationary? A motorcyclist is moving 24.5 m/s toward a stationary siren, and hears an 894 Hz sound. What is the frequency of the siren when the cyclist is stationary? (Hint: 894 Hz is the Doppler-shifted frequency.) (Speed of sound 343 m/s) (Unit Hz) nter
ying a sound 3) If you are moving at a speed of 60 m/s toward a...

ying a sound 3) If you are moving at a speed of 60 m/s toward a stationary sound source that is pla with a frequency of 900 Hz, what frequency do you observe
A whistle of frequency 310.0 Hz moves away from you at a speed of 19.0 m/s....

A whistle of frequency 310.0 Hz moves away from you at a speed of 19.0 m/s. Assume the speed of sound in air is 343.0 m/s. 1.)What is the frequency you hear? 2.) What is the frequency you hear as the whistle moves toward you at the same speed?

A sound source located at x=29 m produces a sound pulse with a frequency of 926...

A sound source located at x=29 m produces a sound pulse with a frequency of 926 Hz which you (who are standing at the origin) note has a loudness of 64 dB. At the very moment that you hear the sound, there is an object located at x=94 m moving with a velocity of 52 m/s. This object reflects the sound back to you. What is the frequency and loudness of the reflected sound when the echo is first heard?...