Question: Electromagnetic Waves Practice A common wavelength designation is in nanometers (nm), where 1 nm = 1 x 10 -9 m = 0.000000001 m (8 zeros).

Electromagnetic Waves Practice

A common wavelength designation is in nanometers (nm), where 1 nm = 1 x 10-9 m = 0.000000001 m (8 zeros).

An atom emits violet light, which has a wavelength of 450 nm.

  1. Find the frequency of the violet light. Find the period of the oscillation of the waves.

Given(s) Unknown(s) Equation(s) Substitution(s) Solution

  1. The nearest star beyond the sun is Alpha Centauri, which is 4.2 x 1016 meters away. If we received a radio message from this star today, how long ago would it have to have been sent?

Given(s) Unknown(s) Equation(s) Substitution(s) Solution

  1. Calculate the speed of light in water, which has an index of refraction of 1.33.

Given(s) Unknown(s) Equation(s) Substitution(s) Solution

  1. Calculate the index of refraction of a mystery substance if light travels at 1.76 x 108m/s in the mystery substance.

Given(s) Unknown(s) Equation(s) Substitution(s) Solution

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