Final answer:
The correct unit of measure for the mass of a bag of apples is the kilogram (A). A kilogram is now defined by fixed fundamental constants and it is the standard SI unit of mass. Other units and tools for measurements include kilometers, grams, centimeters, and various measuring devices.
Step-by-step explanation:
The unit of measure for the mass of a bag of apples is the kilogram (A). A kilogram is the standard unit of mass in the SI (International System of Units). The kilogram was previously defined by a platinum-iridium cylinder's mass, but as of May 2019, it is now defined based on fixed fundamental constants, such as the Planck constant, using a Kibble balance.
For other measurements provided, appropriate units would be:
- The distance between two towns is measured in kilometers.
- The weight of a peanut is best measured in grams or milligrams due to its small mass.
- The length of a hand is typically measured in centimeters or inches.
- The volume of a raindrop can be measured in cubic centimeters or milliliters.
When it comes to tools for measurement:
- The volume of a water balloon can be measured with a graduated cylinder or by displacement in a large enough container.
- The length of a basketball court is measured using a tape measure or measuring wheel.
- The weight of an apple can be measured with a kitchen scale.
- The volume of a milk carton is usually specified on the packaging but can also be determined by measuring its dimensions and calculating the volume.