Question

Unit conversion factors must always be exactly equal to 1 true or false

Answer 1

True. Unit conversion factors are used to change a quantity from one unit to another without changing its value. Since they represent the same quantity in different units, they must always be equal to 1 in terms of magnitude. For example, converting between feet and inches, 1 foot is equal to 12 inches, so the conversion factor would be \( \frac{12 \text{ inches}}{1 \text{ foot}} \) or \( \frac{1 \text{ foot}}{12 \text{ inches}} \), both of which maintain the equality of 1.