On the H-R diagram, the Sun lies on the ______________
Fill in the blank(s) with correct word
main sequence
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Carbon fusion occurs in high-mass stars but not in low-mass stars because
A) the cores of low-mass stars never get hot enough for carbon fusion. B) the cores of low-mass stars never contain significant amounts of carbon. C) only high-mass stars do fusion by the CNO cycle. D) carbon fusion can occur only in the stars known as carbon stars.
In globular clusters, the brightest stars will be:
A) massive blue main sequence stars. B) red supergiants. C) T Tauri stars. D) blue stragglers. E) planetary nebulae.
Newton's Law states that no force is required to keep a moving object in motion. Why, then, do you have to pedal continuously to ride a bicycle along a flat road? ________ force
What will be an ideal response?
A 16.0-kg mass and a 2.25-kg mass are connected by a light string over a massless, frictionless pulley. If g = 9.8 m/s2, what is the acceleration of the system when released?
a. 13.0 m/s2 b. 7.38 m/s2 c. 179 m/s2 d. 9.80 m/s2 e. 1.86 m/s2