Carbon fusion occur in high-mass stars but not in low-mass stars because ________
A) carbon fusion can occur only in the stars known as carbon stars
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) the cores of low-mass stars never get hot enough for carbon fusion
D
You might also like to view...
Which of the following do the atoms 14N and 15N have in common?
A) total number of neutrons and electrons B) number of protons C) total number of protons and neutrons D) number of neutrons
The imaginary, huge, apparently moving sphere on which the stars appear to be mounted is called the ______________ sphere
Fill in the blank(s) with correct word
Which of the following seismic waves travels the slowest?
a. surface waves c. shear waves b. pressure waves d. both surface and pressure waves
Thermodynamic Processes: The figure shows a pV diagram for 0.98 mol of ideal gas that undergoes the process 1 ? 2. The gas then undergoes an isochoric heating from point 2 until the pressure is restored to the value it had at point 1. What is the final temperature of the gas? (R = 8.31 J/mol ? K).
A. -160°C B. 12°C C. 380°C D. 110°C