Briefly explain why spectral lines are useful in determining the temperature of their source
What will be an ideal response?
Different ionization states of the same element have different sets of spectral lines. Thus, we can identify the ionization state, which tells us about the temperature because higher temperatures are required to reach higher ionization states.
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During precipitation-hardening, at peak strength the precipitate changes from coherent to _________.
Fill in the blank(s) with the appropriate word(s).
Two satellites with equal rest masses of 100 kg are traveling toward each other in deep space. One is traveling at 0.650c and the other at 0.850c. The satellites collide and somehow manage to stick together
What is the rest mass of the combined object after the collision? A) 378 kg B) 277 kg C) 200 kg D) 312 kg E) 100 kg
Recall Galileo's Leaning Tower experiment. With negligible air resistance, a heavy and a light object fall
A) with equal accelerations. B) with the same increases in speed. C) to the ground in equal times. D) all of the above
A featureless spectrum, such as a rainbow, is said to be ________
Fill in the blank(s) with correct word