In a self-sustaining fusion reaction, such as occurs in the sun,
A) energy is destroyed.
B) nuclear energy is created from other forms of energy.
C) energy is created.
D) thermal energy is converted to nuclear energy.
E) nuclear energy is converted to other forms of energy.
Question 2
In what way did Galileo improve on the physics of Aristotle?
A) Galileo understood that natural (or unforced) motion occurs at constant velocity.
B) Galileo understood that energy is always conserved in every physical process.
C) Galileo understood that the gravitational force acts between every pair of objects in the universe.
D) Galileo understood that a force is needed to keep an object moving at constant velocity.
E) Galileo understood that no force is needed to keep an object moving in a circle at constant speed.
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