Question

When I wave a charged golf tube at the front of the classroom with a frequency of two oscillations per second, I produce an electromagnetic wave of frequency 2Hz. What is the wavelength of this wave?

Answer 1

To solve the exercise it is necessary to take into account the concepts of wavelength as a function of speed.

From the definition we know that the wavelength is described under the equation,

`\lambda = (c)/(f)`

Where,

c = Speed of light (vacuum)

f = frequency

Our values are,

`f = 2Hz`

`c = 3*10^8km/s`

Replacing we have,

`\lambda = (c)/(f)`

`\lambda = (3*10^8km/s)/(2Hz)`

`\lambda = 1.5*10^8m`

Therefore the wavelength of this wave is
`1.5*10^(8)m`