What is the frequency of an x-ray
wave with an energy of
2.0 x 10^-17 J?
Please explain how!

Answer:
3.3 x 10⁻¹⁷ Hz
Explanation:
To find the frequency, you can use the following equation:
E = h / f
In this equation,
-----> E = energy (J)
-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)
-----> f = frequency (Hz)
You can plug the given values into the equation and simplify to find the frequency. This equation will require a little bit of rearranging.
E = h / f <----- Given equation
(2.0 x 10⁻¹⁷ J) = (6.626 x 10⁻³⁴ J*s) / f <----- Insert values
(2.0 x 10⁻¹⁷ J) x f = (6.626 x 10⁻³⁴ J*s) <----- Multiply both sides by f
f = 3.3 x 10⁻¹⁷ Hz <----- Divide both sides by 2.0 x 10⁻¹⁷