What is the characteristic that distinguishes fermions from bosons?

A) their mass
B) their electric charge
C) their spin
D) their size
E) their speed of travel


C) their spin

Physics & Space Science

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Answer the following statement(s) true (T) or false (F)

1. When you go over the crest of a hill in a roller coaster, a force appears to lift you up out of your seat. This is a fictitious force 2. If your car is hit from behind, you are suddenly pressed back into the seat. The normal force that the seat exerts on you is a fictitious force. 3. You are pressed downward toward the floor as an elevator begins to move upward. The force pressing you down is a fictitious force.

Physics & Space Science

Water flowing through a pipe suddenly comes to a section of pipe where the pipe diameter decreases to 86% of its previous value. If the speed of the water in the larger section of the pipe was what is its speed in this smaller section?

A) 49 m/s B) 42 m/s C) 31 m/s D) 27 m/s

Physics & Space Science

Assuming equal rates of acceleration in both cases, how much longer would it take a car to stop if braking from 56 mi/h than from 28 mi/h?

A) 8 times as long B) 4 times as long C) 2 times as long D) 1.4 times as long E) the same in both cases

Physics & Space Science

If an electromagnetic wave has components Ey = E0 sin(kx - ?t) and Bz = B0 sin(kx - ?t) , in what direction is it traveling?

A) +x B) +y C) -y D) +z E) -x

Physics & Space Science