Any star that is more luminous than the Sun, but has the same temperature as the Sun, is a(n) ____
a. pulsating star
b. white dwarf
c. zero age main sequence star
d. giant
e. brown dwarf
d
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The primary scientific purpose of a particle accelerator is to
A) make small particles achieve large accelerations. B) produce energy for commercial use. C) create particles and study their behavior. D) make small particles go very fast.
Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though they are three of the five simplest elements, why are they rare compared to many heavier elements?
What will be an ideal response?
An excited atom lost an electron from the atom to its surroundings
a. True b. False Indicate whether the statement is true or false
Which object would be absent in the galactic halo? a. emission nebulae
b. old main sequence stars c. red giants d. white dwarfs e. Cepheid variables