What is the main idea of the Big Bang theory?
A) The universe formed from the collapse of a previous universe.
B) All matter and energy in the universe was in an incredibly hot, dense state and space itself began expanding.
C) The universe as we see it formed from the singularity in a black hole.
D) A massive explosion about 14 billion years ago created all matter and energy that rushed out to fill the surrounding space.
B) All matter and energy in the universe was in an incredibly hot, dense state and space itself began expanding.
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Indicate whether the statement is true or false
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A) 1.5 m B) 0.50 m C) 1.9 m D) 0.75 m E) 0.60 m
An inductor, battery, resistor, ammeter, and switch are connected in series. If the switch, initially open, is now closed, what is the current's final value?
a. zero b. battery voltage divided by resistance c. battery voltage times inductance d. battery voltage divided by inductance
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