Find the energy of a beam of x-ray radiation with a wavelength of 9.23
nanometers.

E = 2.15 ×10⁻¹⁷J

Explanation:

Given data:

Wavelength of X-ray = 9.23 nm (9.23×10⁻⁹ m)

Energy of x-ray = ?

Solution:

Formula:

E = hc/λ

h = planks constant = 6.63×10⁻³⁴ Js

c = speed of light = 3×10⁸ m/s

by putting values,

E = 6.63×10⁻³⁴ Js × 3×10⁸ m/s /9.23×10⁻⁹ m

E = 19.89 ×10⁻²⁶ J.m/9.23×10⁻⁹ m

E = 2.15 ×10⁻¹⁷J

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.