Will our Sun ever undergo a white dwarf supernova explosion? Why or why not?

A) no, because it is not orbited by another star
B) yes, right at the end of its double shell-fusion stage of life
C) yes, about a million years after it becomes a white dwarf
D) no, because the Sun's core will never be hot enough to fuse carbon and other heavier elements into iron


A) no, because it is not orbited by another star

Physics & Space Science

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A 2.0-?F capacitor that is initially uncharged is charged through a 50-k? resistor. How long does it take for the capacitor to reach 90% of its full charge?

A) 0.90 s B) 2.2 s C) 0.23 s D) 2.3 s

Physics & Space Science

Heat can be added to air by solar radiation, moisture

A) condensation, or contact with warm ground. B) evaporation, or contact with warm ground. C) condensation, or contact with cool ground. D) evaporation, or contact with cool ground.

Physics & Space Science

The ____ of a telescope is a measure of its ability to show fine detail and depends on the diameter of the objective

a. light-gathering power b. focal length c. magnifying power d. resolving power e. spherical aberration

Physics & Space Science

Characteristics of Waves: A fisherman fishing from a pier observes that the float on his line bobs up and down, taking 2.4 s to move from its highest point to its lowest point. He also estimates that the distance between adjacent wave crests is 48 m. What is the speed of the waves going past the pier?

A. 1.0 m/s B. 20 m/s C. 10 m/s D. 5.0 m/s E. 120 m/s

Physics & Space Science