Neon discharge tubes emit a light with a wavelength of 600. nm that appears deep orange to the human eye. how many photons of this electromagnetic radiation amount to 250. j of energy?

Explanation:

First of all, we need to calculate the energy of one photon with wavelength 600 nm. The energy of each photon is given by

where

is the Planck's constant

is the speed of light

is the wavelength of the light

Substituting numbers into the formula, we find

Now to find the number of photons, we simply divide the total energy (250 J) by the energy of one photon:

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table