8.3.3 Calculate the frequency measured by observer X. In the second experiment, the object moves away from observer X at the same constant speed as before. What should the air temperature, in kelvin, be to make it a fair test between the two experiments? 8.3.4 Consider the three diagrams below. Each one represents the source (with the siren)
8.3.3 Calculate the frequency measured by observer X. In the second experiment, the object moves away from observer X at the same constant speed as before. What should the air temperature, in kelvin, be to make it a fair test between the two experiments? 8.3.4 Consider the three diagrams below. Each one represents the source (with the siren)
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8.3.4 please
![e speed of sound in air depends among others on the air temperature. The following graph
shows this relationship.
Speed of sound in air versus air temperature
350
348
346
344
342
Speed 340
(m.s)
338
336
334
332
330
280 282 284 286
288 290 292 294 296 298 300
Temperature (kelvin)
8.1
Which one of temperature or speed is the dependent variable?
(1
8.2
The gradient of this graph is equal to 0,6 m-s.K. With how much does the speed,
in ms, increase for every 5K increase in temperature?
8.3
Two experiments are done to verify the Doppler effect. In the first experiment, an
object approaches a stationary observer X at a constant speed of 57,5 m-s'. The
object is equipped with a siren that emits sound waves at a fixed frequency of
1 000 Hz. The motion takes place in still air at a temperature of 295 K.
8.3.1
Describe what the Doppler effect is.
8.3.2
What is the speed of sound, in m-s', in air at 295 K?
HINT: Use the graph.
8.3.3
Calculate the frequency measured by observer X.
In the second experiment, the object moves away from observer X at the
same constant speed as before. What should the air temperature, in
kelvin, be to make it a fair test between the two experiments?
8.3.4
Consider the three diagrams below. Each one represents the source (with the siren)
and observer X. Two of the diagrams are applicable on the above-mentioned
experiments.
8.4
Diagram 1
Diagram 2
Diagram 3
Source
Source
Source
8.3.3
Which diagram is applicable to experiment 2?
Which diagram is NOT applicable to any of the experiments?
Give a reason for your answer.
8.3.4
xot](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6872ec7e-be90-4e51-bb8b-d3f1382a68fd%2F10e7f066-c7d7-4ff6-ae8a-953dd37a91f1%2F4vk8gy9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:e speed of sound in air depends among others on the air temperature. The following graph
shows this relationship.
Speed of sound in air versus air temperature
350
348
346
344
342
Speed 340
(m.s)
338
336
334
332
330
280 282 284 286
288 290 292 294 296 298 300
Temperature (kelvin)
8.1
Which one of temperature or speed is the dependent variable?
(1
8.2
The gradient of this graph is equal to 0,6 m-s.K. With how much does the speed,
in ms, increase for every 5K increase in temperature?
8.3
Two experiments are done to verify the Doppler effect. In the first experiment, an
object approaches a stationary observer X at a constant speed of 57,5 m-s'. The
object is equipped with a siren that emits sound waves at a fixed frequency of
1 000 Hz. The motion takes place in still air at a temperature of 295 K.
8.3.1
Describe what the Doppler effect is.
8.3.2
What is the speed of sound, in m-s', in air at 295 K?
HINT: Use the graph.
8.3.3
Calculate the frequency measured by observer X.
In the second experiment, the object moves away from observer X at the
same constant speed as before. What should the air temperature, in
kelvin, be to make it a fair test between the two experiments?
8.3.4
Consider the three diagrams below. Each one represents the source (with the siren)
and observer X. Two of the diagrams are applicable on the above-mentioned
experiments.
8.4
Diagram 1
Diagram 2
Diagram 3
Source
Source
Source
8.3.3
Which diagram is applicable to experiment 2?
Which diagram is NOT applicable to any of the experiments?
Give a reason for your answer.
8.3.4
xot
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