A(n) _______________ spectrum is produced by a hot, excited gas

Fill in the blank(s) with correct word


emission

Physics & Space Science

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When the nuclear reactions begin making too little energy in a star, by virtue of the natural thermostat, the star:

A) would expand slightly. B) would reduce its central temperature. C) would increase its density. D) would increase the mass by a factor of 2.

Physics & Space Science

If eclipses occur in repeatable patterns, then explain why an eclipse is not visible from the same place on Earth after one Saros cycle

What will be an ideal response?

Physics & Space Science

You observe a full moon rising at sunset. What will you see 6 hours later?

A) a full moon on or near your meridian B) waning gibbous moon C) first-quarter moon D) a third-quarter moon

Physics & Space Science

Why is the strange quark strange?

A.) It is more massive than any other kind of quark. B.) It is less massive than any other kind of quark. C.) It is blue. D.) It lives longer than we would expect. E.) It is charmed.

Physics & Space Science