Under what circumstances will a nova occur?
What will be an ideal response?
When a white dwarf pulls mass off its companion in a mass-transfer binary. When this hydrogen shell reaches 10 million K, sudden proton-proton fusion generates the bright flash and rapidly expanding envelope we observe from Earth.
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Light from a 600 nm source goes through two slits 0.080 mm apart. What is the angular separation of the two first order maxima occurring on a screen 2.0 m from the slits?
A) 0.15° B) 0.86° C) 0.015° D) 0.0075° E) 1.75°
The atomic number and mass number for calcium-39 are 20 and 39, respectively. How many neutrons are in one atom?
A) 1 B) 19 C) 20 D) 39 E) 59
The straight-line distance and direction between two points are, together, called ______________
Fill in the blank(s) with correct word
If one object has a large redshift and another object has a small redshift, what can we conclude about these two objects?
A) The one with the large redshift is moving toward us faster than the one with the small redshift. B) The one with the large redshift is moving away from us, and the one with the small redshift is moving toward us. C) The one with the large redshift is moving away from us faster than the one with the small redshift. D) The one with the large redshift is hotter and therefore is putting out more radiation. E) The one with the large redshift is redder in color than the other one.