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

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Answer:frequency = v/π = 3*10^8/6.9 * 10^-13=5*10^20

Explanation: the relationship between the velocity and frequency of a wave is V=fπ, where V=velocity of wave while the π or lander represents wavelength which was given in the question. f represents frequency of wave. velocity of waves differs, e. g sound waves has a velocity of 330m/s while electromagentic spectrum waves eg UV, infrared has a constant velocity called velocity of light = 3*10^8. the question did not clarify the type of wave so I assumed it should be light. Which has a V = 3*10^8. so frequency was calculate d using velocity divided by wavelength (which. Was given).