Exercise: Quantities And Units

Questions for: Quantities And Units

The number 14.8 can also be expressed as
A:
1.48 × 10–1
B:
1.48 × 100
C:
1.48 × 101
D:
1.48 × 102
Answer: C
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The difference between scientific and engineering notation is
A:
powers of ten representation
B:
single vs. multiple digits before decimal point
C:
groupings of multiples of three digits
D:
All of the above
Answer: D
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When using the terms "accuracy" and "precision" for measurements
A:
"precision" implies less measurement error than "accuracy"
B:
"accuracy" implies less measurement error than "precision"
C:
"precision" measures the repeatability of a measurement
D:
both terms mean the same thing
Answer: C
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Adding 27.5 × 103 to 8.9 × 104 equals
A:
36.4 × 107
B:
116.5 × 104
C:
28.39 × 103
D:
1.165 × 105
Answer: D
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Another name for "fundamental units" is
A:
base units
B:
atoms
C:
the metric system
D:
letter symbols
Answer: A
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