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Published byDarlene Carder Modified over 3 years ago

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Warm-Up What is the wavelength of a wave having a frequency of 3.76 x 1014 s-1? λ = c/ν = x 108 m/s = x 10-7 m 3.76 x 1014 s-1

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**What is the frequency of a 6.9 x 10-13 m wave?**

ν = c/λ = x 108 m/s = 4.3 x 1020 s-1 6.9 x m

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**What is the wavelength of a 2.99 Hz wave?**

λ = c/ν = x 108 m/s = x 108 m 2.99 Hz

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**What is the wavelength of a 1.28 x 1017 Hz wave?**

λ = c/ν = x 108 m/s 1.28 x 1017 Hz = x 10-9 m

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**What is the wavelength of 109.6 MHz wave?**

λ = c/ν = x 108 m/s 109.6 MHz =109.6 x 106 Hz = 2.74 m

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**What is the energy of a 7.66 x 1014 Hz wave?**

E = hν = x Js x x 1014 Hz = x J

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**What is the frequency of a wave carrying 8.35 x 10-18 J of energy?**

ν = E / h = x J = x 1016 s-1 x Js

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**What is the frequency of a 1.78 x 10-15 J wave?**

ν = E / h = x J = x 1018 s-1 6.626 x 10-34J-s

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**What is the energy of a 3.12 x 1018 s-1 wave?**

E = h ν = x J-s x x 1018 s-1 = x J

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**What is the frequency of a 1.31 x 10-22 J wave? What is its wavelength?**

ν = E / h = x J = = x s-1 x 10-34J-s λ = c/ν = x 108 m/s 1.98 x 1011 s-1 = m = x 10-3 m

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**What is the wavelength of a 7.65 x 10-17 J wave?**

ν = E / h = x J = x 1017 s-1 x 10-34J-s λ = c/ν = x 108 m/s = 1.15 x 1017 s-1 2.61 x 10-9 m

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**What is the energy of a 9,330 cm wave?**

ν = c/λ = x 108 m/s x 100 cm 9,330 cm 1 m = 3.22 x 106 s-1 E = h ν = x J-s x x 106 s-1 = x J

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**What is the wavelength of a 1.528 x 10-13 J wave?**

ν = E / h = x J = x 1020 s-1 6.626 x 10-34J-s λ = c/ν = x 108 m/s 2.306 x 1020 s-1 = 1.30 x m

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**Which of the following types of radiation is not a part of the electromagnetic spectrum?**

Microwave X-ray Beta ray infrared

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**Which has the greatest energy?**

Ultraviolet Infrared Green light Blue light

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**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 energy

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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. 2 4 5 1 3

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**Compare the broadcast frequencies of the following two radio stations:**

KFGE = MHz KBBK = 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 TELL

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