Question

question 19 1 pts an x - ray has a wavelength of 2.64 nm. what is the energy of one photon? (1 meter = 1x10^9 nm) 7.52x10^ - 20 j 7.52x10^ - 11 j 7.52x10^ - 9 j 7.52x10^ - 26 j 7.52x10^ - 17 j question 20 1 pts

Explanation:

Step1: Convert wavelength to meters

Given \( \lambda = 2.64\ nm\). Since \(1\ m=1\times 10^{9}\ nm\), then \( \lambda=2.64\times 10^{-9}\ m\).

Step2: Use the formula \(E = hc/\lambda\)

where \(h = 6.626\times 10^{-34}\ J\cdot s\) (Planck's constant) and \(c = 3\times 10^{8}\ m/s\) (speed of light).
Substitute the values: \(E=\frac{6.626\times 10^{-34}\times3\times 10^{8}}{2.64\times 10^{-9}}\)

$$
LATEXBLOCK0
$$

Answer:

\(7.52\times 10^{-17}\ J\)