Question

question 3
1 pts
in dimensional analysis, when can units be canceled?
when they appear in both the numerator and denominator
when they are different units
when they are in the same system of measurement
when they represent the same quantity
question 4
1 pts
which conversion would require the most steps using dimensional analysis?
miles per hour to meters per second
hours to minutes
pounds to ounces
meters to kilometers

Explanation:

Question 3

In dimensional analysis, units can be canceled when they are identical and appear in both the numerator and denominator of a fraction, similar to how numbers are canceled in algebraic fractions.

Converting miles per hour to meters per second requires conversion of distance (miles to meters) and time (hours to seconds), involving multiple conversion factors. Hours to minutes, pounds to ounces, and meters to kilometers are single - step conversions within the same physical quantity (time, mass, length respectively).

Answer:

When they appear in both the numerator and denominator

Question 4