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Answer:

7) λ = 0.5 m, 8) f = 4.8 10¹⁴ Hz

Step-by-step explanation:

The speed of an electromagnetic wave is

c = λ f

where c is the speed of light in vacuum c = 3 10⁸ m / s

7) indicate the frequency f = 6.0 10⁸ Hz

we do not know the wavelength

λ = c / f

we calculate

λ = 3 10⁸ / 6.0 10⁸

λ = 0.5 m

8) indicate the wavelength λ = 6.25 10-7 m

we do not know the frequency

f = c / λ

we calculate

f = 3 10⁸ / 6.25 10⁻⁷

f = 0.48 10¹⁵ Hz

f = 4.8 10¹⁴ Hz

User EJ Campbell
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