Chapter 11: Q2MCQ (page 292)
Four students use different instruments to measure the length of the same pen. Which measurement implies the greatest precision?
(a) 160.0 mm
(b) 16.0 cm
(c) 0.160 m
(d) 0.00016 km
(e) Need more information
The measurement of the pen with the greatest precision is \(160.0\;{\rm{mm}}\).
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Your grandfather clockโs pendulum has a length of 0.9930 m. If the clock runs slow and loses 21 s per day, how should you adjust the length of the pendulum?
One hectare is defined as \({\bf{1 \times 1}}{{\bf{0}}^{\bf{4}}}\;{{\bf{m}}^{\bf{2}}}\). One acre is \({\bf{4}}{\bf{.356 \times 1}}{{\bf{0}}^{\bf{4}}}\;{\bf{f}}{{\bf{t}}^{\bf{2}}}\). How many acres are there in one hectare?
Write the following as full (decimal) numbers without prefixes on the units: (a) 286.6 mm, (b) 85 ฮผV(c) 760 mg, (d) 62.1 ps, (e) 22.5 nm, (f) 2.50 gigavolts.
Write out the following numbers in full with the correct number of zeros: (a)\({\bf{8}}{\bf{.69 \times 1}}{{\bf{0}}^{\bf{4}}}\), (b)\({\bf{9}}{\bf{.1 \times 1}}{{\bf{0}}^{\bf{3}}}\), (c)\({\bf{8}}{\bf{.8 \times 1}}{{\bf{0}}^{{\bf{ - 1}}}}\), (d)\({\bf{4}}{\bf{.76 \times 1}}{{\bf{0}}^{\bf{2}}}\), and (e)\({\bf{3}}{\bf{.62 \times 1}}{{\bf{0}}^{{\bf{ - 5}}}}\).
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