Why would Earth's orbit be unaffected were the Sun to suddenly become a black hole?
What will be an ideal response?
Earth's orbit (and those of the other planets) would remain unchanged since they are far enough away that Newton's law of gravity applies and the gravitational force depends only on the masses of the objects and the distance between them, not on their composition or density.
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How many Saros cycles does it take for the same eclipse to occur at about the same location on Earth?
a. one cycle b. three cycles c. 18 cycles d. 22 cycles e. 54 cycles
Length Contraction: A particle in a 799=m-long linear particle accelerator is moving at 0.875c. How long does the particle accelerator appear to the particle?
A. 387 m B. 1039 m C. 184 m D. 1651 m
What would happen if a small piece (say the size of a paper clip) of neutron star material suddenly appeared on Earth?
What will be an ideal response?
Neutron activation is used
A. to treat cancer B. to search for rare atoms C. to provide energy D. to create light