According to the Big Bang cosmological model, which of the following correctly describes the order of events in the first few minutes of the universe’s existence?
Answer: The universe began with one force representing the unification of all forces. During the first fraction of a second, the forces separated triggering a period of inflation. After a short time, matter and antimatter began to form out of the energy present in the universe. Most particles annihilated, but a slight imbalance of matter over antimatter allowed normal matter to dominate. The protons and neutrons underwent nucleosynthesis during the first three minutes creating the overall chemical composition of the universe.
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Pulsars could not be ordinary stars that are pulsating because the pulses are too short
a. True b. False Indicate whether the statement is true or false
Within the frost line, planetesimals were composed entirely of rock, and outside the frost line, planetesimals were composed entirely of ice
Indicate whether the statement is true or false
A parallel plate capacitor of capacitance C0 has plates of area A with separation d between them. When it is connected to a battery of voltage V0, it has charge of magnitude Q0 on its plates. It is then disconnected from the battery and the space between the plates is filled with a material of dielectric constant 3. After the dielectric is added, the magnitudes of the charge on the plates and the potential difference between them are
A.
Q0, 
V0.B.
V0.C.
D.
E.
A repelling force must occur between two charged objects under which conditions?
a. Charges are of equal magnitude. c. Charges are of unequal magnitude. b. Charges are of unlike signs. d. Charges are of like signs.