Transcript Wednesday, September 5

Homework
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
c = λν
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν=
c
λ
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν=
c
4.90 x 10-7 m
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν=
c
4.90 x 10-7 m
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν=
3.00 x
8
10
m/s
4.90 x 10-7 m
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν = 0.612 x
15
10
-1
s
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν=
6.12 x
14
10
-1
s
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν=
6.12 x
14
10
Hz
Homework
1. What is the frequency of green
light, which has a wavelength of
4.90 x 10-7 m?
ν=
6.12 x
14
10
Hz
(1 Hz = 1 wave/second)
Homework
2. An X-ray has a wavelength of
1.15 x 10-10 m. What is its
frequency?
Homework
2. An X-ray has a wavelength of
1.15 x 10-10 m. What is its
frequency?
c = λν
Homework
2. An X-ray has a wavelength of
1.15 x 10-10 m. What is its
frequency?
ν=
c
λ
Homework
2. An X-ray has a wavelength of
1.15 x 10-10 m. What is its
frequency?
ν=
c
1.15 x
-10
10
m
Homework
2. An X-ray has a wavelength of
1.15 x 10-10 m. What is its
frequency?
ν=
3.00 x
8
10
m/s
1.15 x 10-10 m
Homework
2. An X-ray has a wavelength of
1.15 x 10-10 m. What is its
frequency?
ν = 2.61 x
18
10
Hz
Homework
3. What is the speed of an
electromagnetic wave that has a
frequency of 7.8 x 106 Hz?
Homework
3. What is the speed of an
electromagnetic wave that has a
frequency of 7.8 x 106 Hz?
What is the speed of every
electromagnetic wave?
Homework
3. What is the speed of an
electromagnetic wave that has a
frequency of 7.8 x 106 Hz?
C = 3.00 x
8
10
m/s, silly!
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
c = λν
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ=
c
ν
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ=
8
10
3.00 x
m/s
94.7 MHz
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ=
8
10
3.00 x
m/s
9.47 x 101 MHz
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ=
8
10
3.00 x
m/s
9.47 x 107 Hz
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ=
8
10
3.00 x
m/s
9.47 x 107 /s
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ = 0.317 x
1
10 m
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ = 3.17 x
0
10 m
Homework
4. A popular radio station
broadcasts with a frequency of
94.7 MHz. What is the wavelength
of the broadcast? (1 MHz = 106 Hz)
λ = 3.17 m