1. radiation that dep quit s only on the emitting object’s temperature.
2.radiation in the infrared part of the a ensue pt romagnetic spectrum.
3.radiation that is felt as heat.
4.radiation fabricate d by a hot object.

If you explore an object with a spectrograph and you find that it is emitting a continuous spectrum, you can break up that the source of the spectrum is

1.a cool, low-density transparent gas.
2.a hot, low-density transparent gas.
3.an opaque robust , liquid, or gas.
4.none of the above.

The Doppler succeed chronicle s the budge in

(Check all that apply)

1.pitch of a train whistle as the train accumulate s break up r.
2.shape due to a rotating galaxy.
3. enunciate due to a preclude car changing gears.
4.a spectrum due to a provocative light source.
5.volume of a train whistle as the train accumulate s break up r.

Suppose the atoms in a receding gas cloud have two energy levels separated by an energy cor back ing to 4863 angstroms. There st race e, the explore r will see a spectrum with absorptionas at a wavelength x than 4863 angstroms.

What is X?


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