120 20 Feeling 102 100 99% 104 80 0.2 95%. 106 60 0% 2x102 108 40 75% 2x10 1% 50% 10-10 20 5% 2x104 10% 25% 10-12 2x105 20 50 100 200 500 1000 2000 5000 10,000 Frequency (Hz) What is meant by a. threshold of hearing and b. threshold of pain Use the graph to obtain the threshold of hearing. At what distance from an isotropic 10 µW acoustic source is the sound at the audibility threshold for a human? 3. і. Diagram shows the schematic for Emsley's eye. Use the data from the diagram to find out the fraction of light roflect Intensity level (W/m?) Intensity level (dB SPL) 2. Pressure level (Pa)
120 20 Feeling 102 100 99% 104 80 0.2 95%. 106 60 0% 2x102 108 40 75% 2x10 1% 50% 10-10 20 5% 2x104 10% 25% 10-12 2x105 20 50 100 200 500 1000 2000 5000 10,000 Frequency (Hz) What is meant by a. threshold of hearing and b. threshold of pain Use the graph to obtain the threshold of hearing. At what distance from an isotropic 10 µW acoustic source is the sound at the audibility threshold for a human? 3. і. Diagram shows the schematic for Emsley's eye. Use the data from the diagram to find out the fraction of light roflect Intensity level (W/m?) Intensity level (dB SPL) 2. Pressure level (Pa)
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter36: Sensory Systems
Section: Chapter Questions
Problem 2VCQ: Figure 36.14 Cochlear implants can restore hearing in people who have a nonfunctional cochlea The...
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Transcribed Image Text:120
20
Feeling
102
100
99%
2
104
80
0.2
95%
10
60
2x102
108
40
75%
2x103
1%
50%
10-10
20
5%
2x104
10%
25%
10-12
2x10-5
20
50 100 200 500 1000 2000 5000 10,000
Frequency (Hz)
What is meant by
a. threshold of hearing and
b. threshold of pain
Use the graph to obtain the threshold of hearing.
At what distance from an isotropic 10 µW acoustic source is the sound at the audibility threshold for a
human?
3. i.
Diagram shows the schematic for Emsley's eye. Use the data from the diagram to find out the
fraction of light reflected at air -cornea interface
Intensity level (W/m?)
Intensity level (dB SPL)
Pressure level (Pa)
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