Describe the appearance of each of the three types of spectra described by Kirchhoff's laws. Describe how each of the three types of spectra is formed

What will be an ideal response?


(1) A hot solid, liquid, or dense gas emits electromagnetic radiation at all wavelengths and produces a continuous spectrum.
(2) An excited, low-density gas produces an emission, or bright-line, spectrum containing emission lines.
(3) A light source viewed through a low-density gas produces an absorption, or dark-line, spectrum containing absorption lines.

Physics & Space Science

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The most recent estimates are that genetics contribute approx. ____________ to the development of personality characteristics such as shyness or activity level. *

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

The half-angle of the conical shock wave produced by a supersonic aircraft is 60°. What is the ratio of the speed of the aircraft to the speed of sound?

A) 2.0 B) 1.7 C) 0.87 D) 1.2

Physics & Space Science

An automobile traveling on a straight, level road at 25 km/h speeds up to 70 km/h in 20 s. What was the magnitude of the auto's acceleration, in meters per second squared?

Physics & Space Science

If the current increases in a solenoid, the induced emf acts to

A) decrease the flux. B) increase the flux. C) first increase then decrease the flux. D) first decrease then increase the flux. E) have no effect on the flux.

Physics & Space Science