Question

A wave has an energy of 1.5x10^3 J. Find its wavelength?

Answer 1

1.3 × 10⁻²⁸ m

Step-by-step explanation:

The equation relating the energy (E) and the wavelength (λ) of a wave is

`E =(hc)/(\lambda)`

where h = Planck’s constant and c = the speed of light

`\lambda =\frac{6.626 * 10^(-34)\text{ J}\cdot \text{s} * 2.998 * 10^(8) \text{ m} \cdot \text{s}^(-1)}{1.5 * 10^(3) \text{ J}} = 1.3 * 10^(-28)\text{ m}`