Tectonic plates are large segments of the Earth’s crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year. (a) What distance does it move in 1 s at this speed? (b) What is its speed in kilometers per million years
9.
Tectonic plates are large segments of the Earth’s crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year. (a) What distance does it move in 1 s at this speed? (b) What is its speed in kilometers per million years?
15.
(a) Suppose that a person has an average heart rate of 72.0 beats/min. How many beats does he or she have in 2.0 y? (b) In 2.00 y? (c) In 2.000 y?
19.
(a) If your speedometer has an uncertainty of 2.0km/hsize 12{2 "." 0" km/h"} {} at a speed of 90km/hsize 12{"90"" km/h"} {}, what is the percent uncertainty? (b) If it has the same percent uncertainty when it reads 60km/hsize 12{"60"" km/h"} {}, what is the range of speeds you could be going?
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