Quantities

A quantity that has both a number and a unit. (correct)

Observation and measurement of the physical world.

The act of comparing a physical quantity to a unit.

The ratio of a physical quantity to the unit.

Precision refers to the closeness of a measurement to the true value, while accuracy refers to the closeness of a set of measurements to each other.

Precision refers to the closeness of a set of measurements to each other, while accuracy refers to the closeness of a measurement to the true value. (correct)

Precision and accuracy are not important in physics.

Precision and accuracy are the same thing.

Count the number of digits from the first non-zero digit to the last digit. (correct)

Count the number of zeros after the decimal point.

Count the number of zeros before the decimal point.

Count the total number of digits in the measurement.

<p>Quantities that cannot be derived from other quantities.</p> Signup and view all the answers

<p>To compare measurements with different units.</p> Signup and view all the answers