Final answer:
To find the energy of a wave given its wavelength, use Planck's equation E = hf, calculate the frequency with f = c/λ, and then use the calculated frequency to determine the energy.
Step-by-step explanation:
The energy of a wave can be determined using the relationship between energy (E), Planck's constant (h), and frequency (f) of the wave. The equation to calculate this is E = hf, where Planck's constant h is approximately 6.626 × 10^-34 J·s. To find the frequency, we can use the speed of light c, which is 3.00 × 10^8 m/s, and the given wavelength λ (lambda) to calculate the frequency with the formula f = c / λ. Once you have the frequency, you can calculate the energy using Planck's formula mentioned above.