According to general relativity,why does Earth orbit the Sun?
A) Earth is following the straightest path possible,but spacetime is curved in such a way that this path goes around the Sun.
B) The mysterious force that we call gravity holds Earth in orbit.
C) Earth and the Sun are connected by a "ropelike" set of invisible,subatomic particles.
Correct Answer:
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Q1: Which of the following correctly describes what
Q2: What does the equivalence principle say?
A)Gravity is
Q3: Suppose Einstein had never lived and did
Q5: How will you feel in your spacecraft?
A)You
Q6: What evidence supports the predicted existence of
Q7: Which of the following statements is not
Q8: Which of the following correctly describes the
Q9: Suppose two lines appear to be parallel
Q10: If you draw a spacetime diagram,the worldline
Q11: If you draw a spacetime diagram,the worldline
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