You are in a car moving at 90 km/h, and you see someone at the side...
You are in a car moving at 90 km/h, and you see someone at the side of the highway. You use your horn to warn the person. The frequency of the horn is 440 Hz, and the air temperature is 0 °C. Calculate the frequency of the horn the person hears as you approach and as you pass .The answers are 480 and 440
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You are in a car moving at 90 km/h, and you see someone at the
side...
A siren on an emergency car moving with velocity 90 km/hour produces the sound with frequency...
A siren on an emergency car moving with velocity 90 km/hour produces the sound with frequency 300 Hz. What frequency of the siren's sound will be heard by a person standing ahead of the car?
A car moving at 90 km/h passes a 1.21 km -long train traveling in the same...
A car moving at 90 km/h passes a 1.21 km -long train traveling in the same direction on a track that is parallel to the road. Part A If the speed of the train is 71 km/h , how long does it take the car to pass the train? Express your answer using two significant figures. Part B How far will the car have traveled in this time? Express your answer using two significant figures. Part C If the car...
As you stand by the side of the road, a car approaches you at a constant...
As you stand by the side of the road, a car approaches you at a constant speed, sounding its horn, and you hear a frequency of 80.0 Hz. After the car goes by, you hear a frequency of 60.0 Hz. What is the speed of the car? Assume that he speed of sound in air is 343 m/s.
You are driving along the highway at a steady speed of 90 km/h when another car...
You are driving along the highway at a steady speed of 90 km/h when another car decides to pass you. At the moment when the front of his car is exactly even with the front of your car, and you turn your head to smile at him, do the two cars have equal velocities? Draw a position graph to describe the motion of two cars.
A police car is traveling at 144 km/h toward you. The police car's siren is sounding...
A police car is traveling at 144 km/h toward you. The police car's siren is sounding at a frequency of 550 Hz. What frequency of sound, in Hz, would you hear as you approach the police car at speed of 99 km/h?
Question 5 [6 marks] Two cars move directly away from one another. One car sounds a...
Question 5 [6 marks] Two cars move directly away from one another. One car sounds a horn whose frequency is 486 Hz and a person in the other car hears a frequency of 473 Hz. The speed of sound is 343 m/s. The car which sounds its horn is moving twice as fast as the other car. What is the speed of the slower car? [6 marks] Question 6 [5 marks] When an open metal pipe is cut into two...
A car travels at a constant velocity of 90 km/h along an expressway under-ambient temperature and...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
You are driving down the highway at 14.9 m/s when you approach an automobile accident on...
You are driving down the highway at 14.9 m/s when you approach an automobile accident on the side of the road. To keep traffic away from it, a stationary police car has its siren going; to the police, the siren has a frequency of 1100 Hz. If the speed of sound in air is 332 m/s, what frequency (in Hz) will be heard by you in your car? If the relative motion in the previous question was reversed (i.e. if...
ent/Assignment-Responses/submit?dep=222380138tagsautosave The Bridge I Uber Health ops O ESS O Outlook Sample Scholarship Validations O EdAssist...
ent/Assignment-Responses/submit?dep=222380138tagsautosave The Bridge I Uber Health ops O ESS O Outlook Sample Scholarship Validations O EdAssist 6. 1/1 points Previous Answers SerCP11 14.3.P.004. D My Notes Ask Your Teacher A dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of the ocean 155 m below. How much time passes before it hears an echo? 0 202 Need Help? Read It 7. 0/2 points Previous Answers O My Notes SerCP11 14.6.P.027. O Ask...
While driving at a constant speed of 76 km/h, you are passed by a car traveling...
While driving at a constant speed of 76 km/h, you are passed by
a car traveling at 121 km/h. If the frequency of light emitted by
the taillights of the car that passes you is 4.3 1014 Hz, what frequency will you
observe? (Use
c = 2.9979245 ✕ 108 m/s
Enter your answer to at least eight significant figures.)?
What is the change in frequency?
You are driving along the highway at a steady speed of 90 km/h when another car decides to pass you. At the moment when the front of his car is exactly even with the front of your car, and you turn your head to smile at him, do the two cars have equal velocities? Draw a position graph to describe the motion of two cars.
Question 5 [6 marks] Two cars move directly away from one another. One car sounds a horn whose frequency is 486 Hz and a person in the other car hears a frequency of 473 Hz. The speed of sound is 343 m/s. The car which sounds its horn is moving twice as fast as the other car. What is the speed of the slower car? [6 marks] Question 6 [5 marks] When an open metal pipe is cut into two...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
ent/Assignment-Responses/submit?dep=222380138tagsautosave The Bridge I Uber Health ops O ESS O Outlook Sample Scholarship Validations O EdAssist 6. 1/1 points Previous Answers SerCP11 14.3.P.004. D My Notes Ask Your Teacher A dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of the ocean 155 m below. How much time passes before it hears an echo? 0 202 Need Help? Read It 7. 0/2 points Previous Answers O My Notes SerCP11 14.6.P.027. O Ask...
While driving at a constant speed of 76 km/h, you are passed by
a car traveling at 121 km/h. If the frequency of light emitted by
the taillights of the car that passes you is 4.3 1014 Hz, what frequency will you
observe? (Use
c = 2.9979245 ✕ 108 m/s
Enter your answer to at least eight significant figures.)?
What is the change in frequency?
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