A particular star has a surface temperature of 30,000K. Determine Amax, the wavelength at the peak in the plot of intensity versus wavelength.

If you double the temperature of a blackbody, by what factor will the total energy radiated per second per square meter increase?

Give the peak wavelengths, λpeak, for each of the following cases. State which portion of the electromagnetic spectrum it falls within. The red giant star Betelgeuse, with T = 3600 K. (In nm.)

A blackbody radiator in the shape of a sphere has a surface area of 152 m. It has a temperature of 1200 K how much energy does it emit per second?

U U U U E Which diagram(s) show emission of Ultraviolet light? F B D A A D e B e E C F e-

If you observe a star’s blackbody spectrum twice, once from Earth and once from a space shuttle above Earth’s atmosphere, what will you see? An absorption spectrum from Earth and a continuous spectrum from space An absorption spectrum from space and a continuous spectrum from Earth An absorption spectrum from space and an absorption spectrum with more absorption lines from Earth An absorption spectrum from Earth and an absorption spectrum with more absorption lines from space

Calculate the momentum (in kg · m/s) of a photon having a wavelength of 99.2 nm.   How does it compare with the energy of the photon? Ephoton KEelectron =