The order of evolutionary stages of a star like the Sun would be Main Sequence, giant, planetary nebula, and finally
A) hypernova.
B) neutron star.
C) white dwarf.
D) nova.
E) black hole.
C
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Heavy nuclei are unstable because
a. each nucleon is a separate particle that is not acted on by the nuclear force. b. there are not enough protons present relative to the number of neutrons for the electrical force to be strong enough. c. the nuclear force dominates the Coulomb repulsive force at distances less than 2 fm, but falls off rapidly at greater distances. d. nuclei are stable only when the number of neutrons equals the number of protons. e. nuclei are stable only when the number of protons exceeds the number of neutrons.
The king's chamber of the great pyramid is 10.43 meters long, 5.21 meters wide, and 5.82 meters high. What is the volume of the chamber in cubic feet?
A) 316 cubic feet B) 3,720 cubic feet C) 6,530 cubic feet D) 11,200 cubic feet E) 13,200 cubic feet
During ?- decay
A) a neutron is transformed to a proton. B) a proton is transformed to a neutron. C) a neutron is ejected from the nucleus. D) a proton is ejected from the nucleus. E) the number of nucleons increases.
What is the name of constellations that appear to never rise or set?
a. polar constellations b. circumference constellations c. circular constellations d. celestial polar constellations e. circumpolar constellations