If you body is emitting infrared radiation of wavelength 9.4 x 10^(-6)m, what is the energy of the released photons?
A hydrogen atom initially in the n =3 level emits a photon and ends up in the ground state.
a) What is the energy of the emitted photon?
b) If this atom then absorbs a second photon and returns to the n =3,state what must the energy of this photon be?
The amount of carbon -14 in an ancient wooden bowl is found to be one-half that in a new piece of wood. How old is the bowl?