1. Which of the following is the frequency of the musical note C5?
a) 376 g
b) 483 m/s
c) 523 Hz
d) 26.5 J
2. If A and B are vectors and B = -A, which of the following is true?
a) The magnitude of B is equal to the negative of the magnitude of A.
b) A and B are perpendicular.
c) The direction angle of B is equal to the direction angle of A plus 180°.
d) A + B = 2A.
3. Compare three SI units: millimeter, kilogram, and microsecond. Which is the largest?
a) Millimeter
b) Kilogram
c) Microsecond
d) The units are not comparable.
4. What is(are) the difference(s) between 3.0 and 3.0000?
a) 3.0000 could be the result from an intermediate step in a calculation; 3.0 has to result from a final step.
b) 3.0000 represents a quantity that is known more precisely than 3.0.
c) There is no difference.
d) They convey the same information, but 3.0 is preferred for ease of writing.