What is the speed of a photon of red light, if its frequency is 4.3 x 1014 Hz?
To determine the speed of a photon of red light with a frequency of 4.3 x 10^14 Hz, we can use the equation that relates the speed of light, the wavelength, and the frequency of light:
Speed of light = (wavelength) x (frequency)
The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s). However, in this case, we don't have the wavelength of the red light, only the frequency. To find the wavelength, we can use the equation:
Speed of light = (wavelength) x (frequency)
Rearranging the equation, we get:
Wavelength = Speed of light / Frequency
Now let's plug in the values:
Wavelength = 299,792,458 m/s / 4.3 x 10^14 Hz
Calculating:
Wavelength = 0.7 x 10^-6 meters or 700 nm (nanometers)
Therefore, the wavelength of the red light with a frequency of 4.3 x 10^14 Hz is approximately 700 nm.