You hear the siren on an ambulance off in the distance. If the pitch is lower...
You hear the siren on an ambulance off in the distance. If the pitch is lower than it would be normally, what can you conclude about the motion of the ambulance?
a. the ambulance is moving away from you.
b. the ambulance is moving towards you.
c. the ambulance is not moving at all relative to you.
d. we cannot determine if the ambulance is moving without also knowing the wavelength of the sound waves.
Homework Answers
As we know that a high pitch sound corresponds to a high frequencysound wave and a low pitch sound corresponds to a low frequency sound wave.
As per the doppler effect, if the frequency is increasing, the source is coming closer to the observer.
So coming to our question,
Since here the pitch has been decreased then the ambulance is moving away from the observer that means "me". So 'a' is true.
Add Answer to:
You hear the siren on an ambulance off in the distance. If the
pitch is lower...
SFSU ID# NAME: Part 1: Multiple-Choice (48 points possible) 1 When heat is transferred throughout a...
SFSU ID# NAME: Part 1: Multiple-Choice (48 points possible) 1 When heat is transferred throughout a room by moving chenks of air, this is an example of o Conduction O Convection O Radiation O None of the above 2 Heat is another word for O Potential energy O Temperature O Internal energy O Energy that flows from hot objects to cold objects 3. When heat is transferred from a hot cup of coffee to a metal spoon, this is an...
The siren on an ambulance is emitting a sound whose frequency is 2850 Hz. The speed...
The siren on an ambulance is emitting a sound whose frequency is 2850 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 26.6 m/s. Determine the wavelength and the frequency of the sound you hear. (c) If the ambulance is...
Standing at a crosswalk, you hear a frequency of 510 Hz from the siren of an approaching ambulance. After the ambulance...
Standing at a crosswalk, you hear a frequency of 510 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 433 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)
An air raid siren goes off. Two people hear it, one person is 87.3 Itimes farther...
An air raid siren goes off. Two people hear it, one person is 87.3 Itimes farther away from the source of sound than the other What is the relative intensity in dB3 )of sound for the listener farther away relative to that of the listener that is closer?
Suppose an ambulance is driving at 28m/s, with its siren going off at a frequency of...
Suppose an ambulance is driving at 28m/s, with its siren going off at a frequency of 700Hz. You are in your car, waiting at a red light as it approaches. Assume the sound of the siren is traveling at 341m/s. a. What frequency do you hear the horn as it gets closer to you? b. What frequency do you hear the horn as it passes you?
An ambulance is traveling East at 20m/s. The siren emits a fixed frequency of 500Hz. Each...
An ambulance is traveling East at 20m/s. The siren emits a fixed frequency of 500Hz. Each of the following cars is traveling down the road as described. Rank the cars according to the frequency the driver will hear. Select 1 for the car which will hear the highest frequency. Remember that if the frequency is the same, select the same rank and skip the next number. I really suggest drawing a picture to help sort this out. Keep in mind...
1. You are in your car when you hear a siren. In which case will you...
1. You are in your car when you hear a siren. In which case will you hear the highest frequency soundwave from the siren? a. You and the moving siren approach each other b. You and the moving siren drive away from each other c. You and the moving siren are going in the same direction, but you move slower than the vehicle with the siren d. Neither you nor the siren are moving e. You and the moving siren...
A siren, attached to a parked car, emits a sound with frequency 960 Hz. You are...
A siren, attached to a parked car, emits a sound with frequency 960 Hz. You are driving in your car, either straight towards or straight away from the parked car, and hear a frequency of 1069 Hz. Are you moving towards or away from the car? towards away How fast must you be moving? (Give your answer rounded to two sigfigs.)40
You are jogging along a straight road one day at constant velocity vo when you hear...
You are jogging along a straight road one day at constant velocity vo when you hear the siren of an ambulance approaching from behind. The frequency you hear is f1 = 756 Hz. You stop to take a break and the frequency you hear changes to f2 = 765 Hz. The ambulance then overtakes you and speeds away, and the frequency you hear is f3 = 680 Hz. The speed of sound in air is vsound = 340 m/s and...
T/F with explanations for better understanding 1) Two sound waves with unequal speeds are observed to...
T/F
with explanations for better understanding
1) Two sound waves with unequal speeds are observed to have the same pitch. The distance between their rarefactions cannot be the same. Answer 2) Two sound waves with unequal sound levels are observed. The louder of the two waves is the one with the largest amplitude. Answer 3) Standing waves are created with a vibrating string that is held at both ends. Raising the pitch by one octave causes the wavelength to decrease...
SFSU ID# NAME: Part 1: Multiple-Choice (48 points possible) 1 When heat is transferred throughout a room by moving chenks of air, this is an example of o Conduction O Convection O Radiation O None of the above 2 Heat is another word for O Potential energy O Temperature O Internal energy O Energy that flows from hot objects to cold objects 3. When heat is transferred from a hot cup of coffee to a metal spoon, this is an...
An air raid siren goes off. Two people hear it, one person is 87.3 Itimes farther away from the source of sound than the other What is the relative intensity in dB3 )of sound for the listener farther away relative to that of the listener that is closer?
A siren, attached to a parked car, emits a sound with frequency 960 Hz. You are driving in your car, either straight towards or straight away from the parked car, and hear a frequency of 1069 Hz. Are you moving towards or away from the car? towards away How fast must you be moving? (Give your answer rounded to two sigfigs.)40
T/F
with explanations for better understanding
1) Two sound waves with unequal speeds are observed to have the same pitch. The distance between their rarefactions cannot be the same. Answer 2) Two sound waves with unequal sound levels are observed. The louder of the two waves is the one with the largest amplitude. Answer 3) Standing waves are created with a vibrating string that is held at both ends. Raising the pitch by one octave causes the wavelength to decrease...
Most questions answered within 3 hours.
-
Please help me with FLOWCHART and UML diagram for class,
thank you!
#include <iostream>
#include <fstream>...
asked 6 minutes ago -
3. Describe the “logic circuit” of the Lac operon. Which
proteins are bound or not to...
asked 7 minutes ago -
Ayesha’s adjusted gross income is $60,000 in 2019. She donated a
piece of artwork with a...
asked 14 minutes ago -
For Dijkstra’s shortest path algorithm:
a. Give the Big-O time for Dijkstra’s shortest path algorithm
and...
asked 26 minutes ago -
Phosphorus violates the 'octet rule' in biological molecules,
forming more covalent bonds than expected based on...
asked 29 minutes ago -
A 1.3 eV electron has a 10-4 probability of tunneling
through a 2.4 eV potential barrier....
asked 48 minutes ago -
What is the one ingredient that is common to being successful
with all stakeholders?
profit
trust...
asked 47 minutes ago -
Write an assembly language 32 bit program that reads in lines of
text by a .txt...
asked 49 minutes ago -
what is the density ( in g/L) of hydrogen gas at 29 degrees C and a...
asked 58 minutes ago -
5-6. You are considering three investment alternatives for some
spare cash: Old Reliable Corporation stock (A1),...
asked 50 minutes ago -
Problem 16-02
Receivables Investment
Medwig Corporation has a DSO of 45 days. The company averages
$7,250...
asked 1 hour ago -
Mr. Brown hired Lowe's Maintenance Services Limited to repair
and paint the exterior wall of his...
asked 1 hour ago