Question

A bicyclist is pedaling down a road at 8 m/sec. A car approaches him from behind....

A bicyclist is pedaling down a road at 8 m/sec. A car approaches him from behind. When the car is preparing to pass he sounds his horn. At first the bicyclist hears a frequency of 520 HZ but the sound appears to drop in frequency to 470 HZ after the car passes.

a) How fast is the car moving? (v sound = 340 m/sec)(answer to nearest whole number)

10

b) what is the actual frequency of the horn (don't assume it is the average of the 2 perceived frequencies)

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

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
1) A car is approaching a reflecting wall. A stationary observer behind the car hears a...
1) A car is approaching a reflecting wall. A stationary observer behind the car hears a sound of frequency 790 Hz from the car horn and a sound of frequency 873 Hz from the wall. (a) How fast is the car traveling? .......... km/h (b) What is the frequency of the car horn? ........... Hz (c) What frequency does the car driver hear reflected from the wall? ............ Hz ------------------------------------------------------------------------------------------------ 2) A bat flying toward an obstacle at 10 m/s...
1) A pedestrian waiting for the light to change at an intersection hears a car approaching...
1) A pedestrian waiting for the light to change at an intersection hears a car approaching with its horn blaring. The car's horn produces sound with a frequency of 381 Hz, but the pedestrian hears a frequency of 389 Hz. How fast is the car moving? 2) A train moving with a speed of 31.3 m/s sounds a 151 Hz horn. What frequency is heard by an observer standing near the tracks as the train approaches?
A musician in a car travelling at a speed of 28.0 m/s plays a horn (modeled...
A musician in a car travelling at a speed of 28.0 m/s plays a horn (modeled as an open-closed tube 33.0 cm long). The note played is at its fundamental frequency. What frequency does an observer standing on the side of the road hear as the car approaches her? Assume the speed of sound is 340 m/s.
A truck moving at 36 m/s passes a police car moving at 45 m/s in the...
A truck moving at 36 m/s passes a police car moving at 45 m/s in the opposite direction. The frequency of the sound emitted by the siren on the police car is 500 Hz and the speed of sound in air is 343 m/s. (a) What is the frequency heard by an observer in the truck as the police car approaches the truck? (b) What is the frequency heard by an observer in the truck after the police car passes...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT