A ZAMS star evolves __________ and to the __________ on the H-R diagram because ________________
a. downward, left, the core expands which causes the outer layers to expand b. upward, right, the core contracts which causes the outer layers to expand
c. upward, left, the core expands which causes the outer layers to contract d. downward, right, the core contracts which causes the outer layers to contract
b
You might also like to view...
A uniform film of oil (n = 1.31) is floating on water. When sunlight in air is incident normally on the film, an observer finds that the reflected light has a brightness maximum at ? = 450 nm and a brightness minimum at ? = 600 nm. What is the thickness of the oil film?
Does the average distance that a neutron travels through fissionable material before escaping increase or decrease when two pieces of fissionable material are assembled into one piece?
Does this assembly increase or decrease the probability of an explosion? A) The average distance increases while the probability of an explosion also increases. B) The average distance decreases while the probability of an explosion decreases. C) The average distance increases while the probability of an explosion decreases. D) The average distance decreases while the probability of an explosion increases.
A starship "Alpha" travels at 0.8c past an identical starship, "Beta," which is at rest. Both an engineer on the "Alpha" and a scientist on the "Beta" measure the length of the other ship as it passes by. Who measures the longer length?
A. The scientist B. Both measure the same length C. The engineer D. The measured lengths cannot be compared
At a pressure of 1 atmosphere, a mixture of two metals (A and B) has the two phases ? and ? equilibrium at the selected temperature (T). Can the chemical composition of the ? phase be changed by adding more A-type atoms at temperature (T)? _____________
Fill in the blank(s) with the appropriate word(s).