Greenwood press

VARIATION
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Resistance of coiled copper wire for
wire diameters from 0.002 to 0.01 m,
and lengths from 0 to 1200 m.

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rewrite the formula and evaluate the dependent value for the unknown situation.
Variation problems can also be solved with proportions. (See Proportions.)
online sources for further exploration
Applications of variation


Diving

Fan laws

Financial hedging

Galilieo’s pendulum experiments
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Kepler’s laws


Harmonics, resonance, and interference

Murphy’s law of locksmithing
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Population growth described in Annenberg Math in Everyday Life

Ventilation
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Formulas that show different variation can be found in XREF

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VECTORS
Vectors emerged from the study of physical situations in which two or more
forces were applied to an object. A vector is a directed line segment whose length
is proportional to the time, distance, or force being measured. Many people use
vectors to give directions. “Go down this street six blocks. Turn left at the stop
sign. Go another two blocks to the stoplight. Turn left at the stoplight at Maple