Problem 6

When a nail is heated up with a blowtorch explain why it first glows red. then orange then white.


Problem 7

If neon lights are colored red, what does that tell us about the spacing of the energy levels in neon?



Problem 8

What is the wavelength of a photon that has three times as much energy as that of a photon with a wavelength of 450 nm?


Problem 9

If an atom has an energy spacing of 3.55 x 10-19 J between two levels, what wavelength light will it absorb?


Problem 10

In a normal light bulb, how is the tungsten wire made to emit white light? What has to happen to it?