Question

A truck honking its 1000 Hz horn is traveling at 75 mph toward you. The speed...

A truck honking its 1000 Hz horn is traveling at 75 mph toward you. The speed of sound at that time was 1110 feet per second. What is the frequency you hear?

=[x]________________

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Speed of sound, v = 1110 ft/s

Speed of the truck(also the speed of source), =75 mph = 110 ft/s

Since 1 mph = 1.466667 ft/s

Frequency of the source,

The source is approaching you therefore , by Doppler's effect frequency observed will be

The frequency that you hear will be higher than the original frequency of the source.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A car approaches you at a constant speed, sounding its horn, and you hear a frequency...
A car approaches you at a constant speed, sounding its horn, and you hear a frequency of 40 Hz. After the car goes by, you hear a frequency of 60 Hz. What is the frequency of the sound emitted by the horn? The speed of sound in the air is 343 ms-1.
URGENt A trailer truck traveling east at 32.0 m/s sounds a 750 Hz horn. What is...
URGENt A trailer truck traveling east at 32.0 m/s sounds a 750 Hz horn. What is the wavelength of the sound heard by a stationary listener located west of the truck? (The speed of sound is 341 m/s)
A race car is traveling towards you and you hear a sound of frequency 4072 Hz...
A race car is traveling towards you and you hear a sound of frequency 4072 Hz while the car is traveling towards you. Then the car shoots by you and as the car is traveling away from you, you hear a frequency of 2774 Hz. The car is moving at a constant speed during the whole time you hear these two frequencies, what is the speed (in m/s) of the car
An ambulance driver traveling at 34.0 m/s (76.1 mph) honks his horn as he sees a...
An ambulance driver traveling at 34.0 m/s (76.1 mph) honks his horn as he sees a motorist ahead on the highway traveling in the same direction. The motorist hears a frequency of 378 Hz and notices that his own speedometer reads 33.6 mph (15.0 m/s). Calculate the frequency that the ambulance driver hears. (Speed of sound is 340 m/s) (in Hz) A: 1.17×10^2 B: 1.46×10^2 C: 1.82×10^2 D: 2.28×10^2 E: 2.85×10^2 F: 3.56×10^2 G: 4.45×10^2 H: 5.56×10^2
A speed boat sounds its horn while moving towards the shore at 44.0 m/s . If...
A speed boat sounds its horn while moving towards the shore at 44.0 m/s . If people on the shore think the horn frequency is 84.0 Hz , what frequency did the speed boat pilot hear? 73.2 Hz 94.8 Hz 74.4 Hz 96.4 Hz
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed...
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 341 m/s. (a) An observer waiting at the crossing receives a frequency of 213 Hz. What is the speed of the train? ____m/s (b) What frequency does the observer receive as the train moves away? ____Hz
A train approaches a crossing at a speed of 20.0 m/s, sounding a horn with a...
A train approaches a crossing at a speed of 20.0 m/s, sounding a horn with a frequency of 1000 Hz. A driver stopped at the crossing blows his horn (f = 800 Hz) in frustration. (a) What frequency does the driver hear coming from the approaching train horn? (b) The driver continues blowing his horn after the train passes. What frequency does the train engineer hear coming from the car horn as the train moves away from the crossing?
The siren on an ambulance is emitting a sound whose frequency is 2550 Hz. The speed...
The siren on an ambulance is emitting a sound whose frequency is 2550 Hz. The speed of sound is 343 m/s. (a) If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you hear? (b) Suppose that the ambulance is moving toward you at a speed of 26.2 m/s. Determine the wavelength and the frequency of the sound you hear. (c) If the ambulance is...
The siren on an ambulance is emitting a sound whose frequency is 2650 Hz. The speed...
The siren on an ambulance is emitting a sound whose frequency is 2650 Hz. The speed of sound is 343 m/s. (a) If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you hear? (b) Suppose that the ambulance is moving toward you at a speed of 26.3 m/s. Determine the wavelength and the frequency of the sound you hear. (c) If the ambulance is...
As you are standing on the pavement, a car approaches you at a speed of 98...
As you are standing on the pavement, a car approaches you at a speed of 98 km/h, sounding its horn at a frequency of 9,213 Hz. Determine the frequency of the sound that you hear in SI units (Hz)
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT