376 x 10 14 s 1 λ cν 300 x 10 8 ms 798 x 10 7 m 376 x 10 14 s 1 What is the frequency of a 69 x 10 13 m wave ID: 669085
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Slide1
Warm-Up
What is the wavelength of a wave having a frequency of
3.76
x 10
14
s
-1
?
λ = c/ν =
3.00 x 10
8
m/s
=
7.98 x 10
-7
m
3.76 x 10
14
s
-1
Slide2
What is the frequency of a 6.9 x 10
-13
m wave?
ν = c/λ =
3.00 x 10
8
m/s
=
4.3
x 10
20
s
-1
6.9 x 10
-13
m Slide3
What is the wavelength of a 2.99 Hz wave
?
λ = c/ν =
3.00 x 10
8
m/s
=
1.00 x 10
8
m
2.99 HzSlide4
What is the wavelength of a 1.28 x 10
17
Hz wave
?
λ = c/ν =
3.00 x 10
8
m/s
1.28 x 10
17
Hz
=
2.34 x 10
-9
mSlide5
What is the wavelength of 109.6 MHz wave
?
λ = c/ν =
3.00 x 10
8
m/s
109.6
MHz
=109.6 x 10
6
Hz
= 2.74 mSlide6
What is the energy of a 7.66 x 10
14
Hz wave
?
E =
hν
= 6.626
x 10
-34
Js
x 7.66 x 10
14
Hz
=
5.08
x 10
-19
JSlide7
What is the frequency of a wave carrying 8.35 x 10
-18
J of energy
?
ν = E / h =
8.35 x
10
-18
J
=
1.26 x 10
16
s
-1
6.626
x
10
-34
JsSlide8
What is the frequency of a 1.78 x 10
-15
J wave?
ν
= E / h =
1.78 x 10
-15
J
= 2.69 x 10
18
s
-1
6.626 x
10
-34
J-sSlide9
What is the energy of a 3.12 x 10
18
s
-1
wave?
E
= h ν = 6.626
x
10
-34
J-s x 3.12 x 10
18
s
-1
=
2.07 x 10
-15
JSlide10
What is the frequency of a 1.31 x 10
-22
J wave? What is its wavelength?
ν
= E / h =
1.31 x 10
-22
J
=
=
1.98 x 10
+11
s
-1
6.626
x 10
-34
J-s
λ
= c/ν =
3.00 x 10
8
m/s
1.98 x
10
11
s
-1
=
0.001 52 m = 1.52 x 10
-3
m
Slide11
What is the wavelength of a 7.65 x 10
-17
J wave?
ν = E / h =
7.65 x 10
-17
J
=
1.15
x 10
17
s
-1
6.626
x 10
-34
J-s
λ = c/ν =
3.00 x 10
8
m/s
=
1.15
x 10
17
s
-1
2.61 x 10
-9
mSlide12
What is the energy of a 9,330 cm wave?
ν = c/λ =
3.00 x 10
8
m/s
x
100 cm
9,330 cm
1 m
= 3.22 x 10
6
s
-1
E = h ν =
6.626
x 10
-34
J-s x
3.22
x 10
6
s
-1
=
2.13 x 10
-27
JSlide13
What is the wavelength of a 1.528 x 10
-13
J wave?
ν = E / h =
1.528 x 10
-13
J
= 2.306
x 10
20
s
-1
6.626
x 10
-34
J-s
λ = c/ν =
3.00 x 10
8
m/s
2.306 x
10
20
s
-1
= 1.30 x 10
-12
mSlide14
Which of the following types of radiation is not a part of the electromagnetic spectrum?
Microwave
X-ray
Beta ray
infraredSlide15
Which has the greatest energy?
Ultraviolet
Infrared
Green light
Blue lightSlide16
Radiation with a longer wavelength have
A smaller frequency and higher energy
A smaller frequency and lower energy
A higher frequency and higher energy
A higher frequency and lower energySlide17
Arrange the following electromagnetic radiations in order of decreasing wavelength (largest to smallest).
Infrared radiation from a heat lamp
Ultraviolet light form the sun
Dental X-rays
The signal from a short-wave radio station
Green light.
1
2
4
5
3Slide18
Compare
the broadcast frequencies of the following two
radio
stations:
KFGE
= 98.1 MHz KBBK = 107.3 MHz
Which
has the
fastest speed?
KFGE KBBK SAME CAN’T TELL
A photon of which would have the
higher energy
?
KFGE KBBK SAME CAN’T TELLSlide19