In sample question 28.4 on page 841, in order to find the total equivalent resistance, they first considered all the resistors into two groups. The two groups are in series. They find the equivalent resistance for each group, and add them to get the total equivalent resistance. The total current is equal to the total voltage difference over the total equivalent resistance.
A. True
B. False

What is the length x of the side of the triangle below? (hint: use the cosine function)

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .