Wanting to save a few bucks, bill lights his house with clearance halloween lights which are orange (600 nm) and purple (400 nm). a- what is the photon energy corresponding to each of these colors? b- light from both colors are shined on a metal and electrons are emitted from the metal, however the emitted electrons have no kinetic energy. what is the binding energy of the metal?

For a: The energy corresponding to 400 nm is 2.06 eV and energy corresponding to 600 nm is 3.10 eV.

For b: The binding energy of the metal is 3.10 eV.

Explanation:

The equation used to calculate the energy for given wavelength, we use the equation given by Planck, which is:

To convert into MeV, we use the final equation:

      .......(1)

Putting values in equation 1, we get:

Putting values in equation 1, we get:

When two lights are made to fall on metal, photons on each color collides with the metal electrons individually. The energy associated with them do not get add up.

As, the energy of purple light is higher. So, the photons of this color will manage to bring the electrons of metal to come to the surface and hence, this color will give use the value of binding energy.

Energy associated to purple color = Binding energy

Thus, the binding energy of the metal is 3.10 eV.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.