Final answer:
Using the formula for the relationship between frequency, wavelength, and the speed of light, the calculated frequency for a 6.9 x 10^-13 meter wave is different from the given frequency of 4.3 x 10^21 Hz, therefore, the statement is false.
Step-by-step explanation:
The statement "4.3 x 10^21 Hz is the frequency of a 6.9 x 10^-13 meter wave" can be assessed by using the formula that relates wave frequency (f), wavelength (λ), and the speed of light (c): f = c / λ. The speed of light (c) is a constant equal to approximately 3.00 x 10^8 meters per second. Given the wavelength (λ = 6.9 x 10^-13 meters), we can calculate the frequency as follows:
f = c / λ = (3.00 x 10^8 m/s) / (6.9 x 10^-13 m) = 4.35 x 10^20 Hz.
This calculated frequency is different from the given frequency of 4.3 x 10^21 Hz, hence the statement is false.