Astronomers have taken the spectrum of a new star and found it to be continuous with several dark lines. The continuous spectrum has a peak
wavelength of 534 nm. Show all work for the calculation and upload an
image of the work.
a) Using all appropriate Kirckhoff's Laws describe what the above
information tells us about the nature of this star.
b) What is the temperature of this star?

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

Which of the following are guidelines to follow for obtaining accurate observations