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You are driving down the road at 15.6 m/s (35 mph)...
You are driving down the road at 15.6 m/s (35 mph) when an ambulance passes you...
You are driving down the road at 15.6 m/s (35 mph) when an ambulance passes you with its siren blaring. The ambulance siren produces a frequency of 700 Hz. As the ambulance approaches you from behind, you hear a frequency of 730 Hz . The speed of sound in air is 344 m/s. What is the speed of the ambulance? The positive direction points from your car (listener) toward the ambulance (source). Express your answer in meters per second.
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...
You are driving at a velocity of 95 MPH (42.5 m/s) when you hear a police...
You are driving at a velocity of 95 MPH (42.5 m/s) when you hear a police siren behind you. From your previous run-ins with the law, you know that at a particular point in the sound, the police sirens on the police cars in your town emit a frequency of 751.255 Hz. You hear the sound at a frequency of 752.551 Hz. How fast the the police car going (in m/s)? (Assume that the speed of sound is 343 m/s.)
1. What is the speed of the ambulance v_s? 2. What is the frequency of the...
1. What is the speed of the ambulance v_s?
2. What is the frequency of the siren at its source f_0?
3. What is your initial speed v_o?
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 f-756 Hz You stop to take a break and the frequency you hear changes to f2 765 Hz The ambulance then overtakes you...
An ambulance is moving with a velocity of 45.0 m/s. The siren has a frequency of...
An ambulance is moving with a velocity of 45.0 m/s. The siren has a frequency of 130 Hz. The temperature of the air outside is 90° F a) What frequencies are observed by a stationary person on the sidewalk as the ambulance approaches and after it passes? b) The ambulance now stops and you run towards it at 4.0 m/s along the sidewalk. What is the frequency you observe? c) The sound intensity level of the siren is 110 dB....
Constants 1 Periodic Ta The sound intensity 60.0 m from a waling tomado sienis 0.130 W/m...
Constants 1 Periodic Ta The sound intensity 60.0 m from a waling tomado sienis 0.130 W/m . Part A What is the intensity 1400 m ? Express your answer with the appropriate units Value Units Submit Previous Awes Best * Incorrect; Try Again: 9 attempts remaining - Part B W/m. Estimate the maimum distance at which he siren can be heard The weakest intensity likely to be heard over background noise is Express your answer with the appropriate units.
you are driving along a highway at 35.0 m/s when you hear the siren of a...
you are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind at constant speed and you perceive the frequency as 1310 Hz. you are relieved that he is in pursuit of a different driver when he continues past you, but now you perceive the frequency as 1240 hz. what is the frequency of the siren in the police car? the speed of sound in air is 343 m/s
14. You are driving an ambulance through traffic at 10 m/s to the scene of a...
14. You are driving an ambulance through traffic at 10 m/s to the scene of a vicious cheetah attack. A police car is already there. Both the ambulance and the police car have sirens that generate 800 Hz tones. When you are 1 km away, the police siren's loudness is approximately 40 dB. a. (6 points) How far are you from the police car when it's siren's loudness is 86 dB? -TP unt b. (6 points) As you approach, what...
Correct Constants| Periodic Table Significant Figures Feedback: Your answer 1431.8 required for this part. Hz was...
Correct Constants| Periodic Table Significant Figures Feedback: Your answer 1431.8 required for this part. Hz was either rounded differently or used a different number of significant figures than The predominant frequency of a certain fire truck's siren is 1350 Hz when at rest. Part B What frequency do you detect if you move with a speed of 20.0 m/s away from it? Express your answer with the appropriate units. 1243.7 Hz Submit X incorrect; Try Again; 3 attempts remaining Review...
Part B Constants A 1200 kg car is moving on the freeway at 69.0 mph. What...
Part B Constants A 1200 kg car is moving on the freeway at 69.0 mph. What is the magnitude of its kinetic energy in Sl units? K- 1 7430 Submit Previous Answers Request Answer Incorrect; Try Again; 5 attempts remaining PartC At what speed, in m/s, will the car's momentum be half of what it is in part A m/s Submit Request Answer MacBook Pro
1. What is the speed of the ambulance v_s?
2. What is the frequency of the siren at its source f_0?
3. What is your initial speed v_o?
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 f-756 Hz You stop to take a break and the frequency you hear changes to f2 765 Hz The ambulance then overtakes you...
An ambulance is moving with a velocity of 45.0 m/s. The siren has a frequency of 130 Hz. The temperature of the air outside is 90° F a) What frequencies are observed by a stationary person on the sidewalk as the ambulance approaches and after it passes? b) The ambulance now stops and you run towards it at 4.0 m/s along the sidewalk. What is the frequency you observe? c) The sound intensity level of the siren is 110 dB....
Constants 1 Periodic Ta The sound intensity 60.0 m from a waling tomado sienis 0.130 W/m . Part A What is the intensity 1400 m ? Express your answer with the appropriate units Value Units Submit Previous Awes Best * Incorrect; Try Again: 9 attempts remaining - Part B W/m. Estimate the maimum distance at which he siren can be heard The weakest intensity likely to be heard over background noise is Express your answer with the appropriate units.
14. You are driving an ambulance through traffic at 10 m/s to the scene of a vicious cheetah attack. A police car is already there. Both the ambulance and the police car have sirens that generate 800 Hz tones. When you are 1 km away, the police siren's loudness is approximately 40 dB. a. (6 points) How far are you from the police car when it's siren's loudness is 86 dB? -TP unt b. (6 points) As you approach, what...
Correct Constants| Periodic Table Significant Figures Feedback: Your answer 1431.8 required for this part. Hz was either rounded differently or used a different number of significant figures than The predominant frequency of a certain fire truck's siren is 1350 Hz when at rest. Part B What frequency do you detect if you move with a speed of 20.0 m/s away from it? Express your answer with the appropriate units. 1243.7 Hz Submit X incorrect; Try Again; 3 attempts remaining Review...
Part B Constants A 1200 kg car is moving on the freeway at 69.0 mph. What is the magnitude of its kinetic energy in Sl units? K- 1 7430 Submit Previous Answers Request Answer Incorrect; Try Again; 5 attempts remaining PartC At what speed, in m/s, will the car's momentum be half of what it is in part A m/s Submit Request Answer MacBook Pro
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