jaimephelps17
18.07.2020 •
Physics
If an electromagnetic wave has a frequency of 4.5 x 1018 Hz, what is its
wavelength? Use î=”. The speed of light is 3 * 108 m/s.
A. 1.5 x 10-26
B. 6.7 x 1026 m
C. 1.5 x 10-10 m
D. 6.7 * 10-11 m
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Ответ:
Wavelength of electromagnetic wave = 6.7 × 10⁻¹¹
Explanation:
Given:
Frequency of electromagnetic wave = 4.5 × 10¹⁸ Hz
Speed of light = 3 × 10⁸ m/s
Find:
Wavelength of electromagnetic wave
Computation:
⇒ Wavelength = Speed of light / Frequency
⇒ Wavelength of electromagnetic wave = 3 × 10⁸ / 4.5 × 10¹⁸
⇒ Wavelength of electromagnetic wave = 0.67 × 10⁻¹⁰
Wavelength of electromagnetic wave = 6.7 × 10⁻¹¹
Ответ:
When both swimmers do work at the same rate.
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