Series/Parallel Circuits: As more resistors are added in series to a constant voltage source, the power supplied by the source
A. increases.
B. decreases.
C. does not change.
D. increases for a time and then starts to decrease.
Answer: B
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Which of the following is a reason why early living organisms on Earth could not have survived on the land surface?
a. the lack of an ozone layer b. the lack of oxygen in the atmosphere c. the fact that these organisms were single-celled d. the lack of oxygen
The nucleus of an atom is charged negatively.
Indicate whether the statement is true or false.
The banking angle in a turn on the Olympic bobsled track is not constant, but increases upward from the horizontal. Coming around a turn, the bobsled team will intentionally "climb the wall," then go lower coming out of the turn
Why do they do this? A) to reduce the g-force on them B) to increase the g-force on them C) to prevent the bobsled from turning over D) to take the turn at a faster speed E) to give the team better control, because they are able to see ahead of the turn
Which of the following is not a number that corresponds to the filling of a nuclear shell?
A. 8 B. 18 C. 50 D. 82 E. 126