In what way do observations of Mercury support Einstein's general theory of relativity?
A) Mercury's orbit slowly precesses in a way that matches the prediction of general relativity but disagrees with the prediction based on Newton's universal law of gravitation.
B) Einstein discovered that time runs slower on Mercury than on Earth, as his theory predicted.
C) Einstein was able to explain the fact that Mercury orbits the Sun exactly twice for every three rotations, and Newton's theory of gravity cannot account for this.
D) We can see that Mercury lies deeper in the spacetime bowl that surrounds the Sun than does Earth.
A
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Seismic data indicates that there is a relatively thin outer layer of Earth called the
a) outer core. b) asthenosphere. c) mantle. d) crust.
Do physicists consider electromagnetic fields to be "real"?
A) No, because they are only an idea, imagined only by the human mind. B) Yes, because electromagnetic fields contain energy, even though they are not made atoms. C) Yes, because electromagnetic fields exert forces, even though they are not made of as atoms. D) No, because electromagnetic fields are not made of any material substance such as atoms. E) Yes, because electromagnetic fields are made of atoms.
the greater average kinetic energy per molecule,
A. The quantity is greater for gas A. B. The quantity is greater for gas B. C. The quantity is the same for both gases. D. One does not know enough to compare the quantities.
The period-luminosity relationship is primarily used for main sequence stars
Indicate whether the statement is true or false