An electromagnetic wave was measured to have a wavelength of 160 nm. Calculate the energy of that wave as it travels from the sun.

The energy of an electromagnetic wave can be calculated using the equation E = hc/wavelength, where E is the energy of the wave, h is the Planck constant (6.63 x 10^-34 J*s), c is the speed of light in a vacuum (2.998 x 10^8 m/s), and wavelength is the wavelength of the wave in meters.

To solve this problem, we need to first convert the wavelength from nanometers (nm) to meters. To do this, we can divide the wavelength by 1 billion (1 x 10^9):

wavelength (m) = 160 nm / 1 x 10^9 = 1.60 x 10^-7 m

Now we can plug this value into the equation to calculate the energy of the electromagnetic wave:

E = (6.63 x 10^-34 J*s) * (2.998 x 10^8 m/s) / (1.60 x 10^-7 m) = 4.24 x 10^-19 J

So the energy of the electromagnetic wave is approximately 4.24 x 10^-19 joules.