Final answer:
In the equation c = λv, the variable c represents the Speed of Light, which is approximately 3.00 x 10^8 m/s in a vacuum.
Step-by-step explanation:
In the equation c = λv, the variable c represents the Speed of Light. This equation describes the relationship between the speed of light, wavelength (λ), and frequency (v or f). For the relationship to be accurate, when the speed of light is used in meters per second (m/s), the wavelength must be measured in meters, and the frequency in Hertz (Hz). The speed of light is approximately 3.00 × 108 m/s in a vacuum and is only very slightly smaller in air. To solve for wavelength or frequency, one can rearrange the formula accordingly.