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An x-ray with a wavelength of 3.5 × 10^-9 m travels with a speed of 3.0 × 10^8 m/s. What is the frequency of this electromagnetic wave? A.9.52 × 10^-1 Hz B.8.57 × 10^16 Hz C.1.17 × 10^-17 Hz D.1.05 Hz

Respuesta :

[tex]\begin{gathered} f=\frac{1}{T} \\ T=\frac{\lambda}{v} \end{gathered}[/tex][tex]\begin{gathered} T=\frac{3.5\cdot10^{-9}m}{3\cdot10^8m/s}=1.67\cdot10^{-17}s \\ f=8.57\cdot10^{16}Hz \end{gathered}[/tex]

Answer. B

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