When the principal quantum number is n = 5, how many states have distinct pairs of values of ? and m??
1.1
2.5
3.9
4.25
4
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An expanding shell of gas ejected from a medium-mass star during the latter stages of its evolution is known as a black hole
Indicate whether the statement is true or false
The precision and number of significant figures in 1.003 km is
A. precision = .0001 km, significant figure = 4. B. precision = .001 km, significant figure = 4. C. precision = .0001 km, significant figure = 3. D. precision = .001 km, significant figure = 3. E. precision = .0001 km, significant figure = 2.
In Carol's (and Kaku's) theory of eternal inflation
A) astronomers can never buy much with the money they earn B) our universe undergoes extremely fast expansion forever C) many baby universes form, most of which are dead, but some which are similar to ours D) the universe has 35 different dimensions which we can access through black holes E) the universe continues to expand at a constant rate from the time of the Big Bang until the present
Distinguish between longitudinal and transverse waves