Question

Indicate the SI base units or derived units that are appropriate for the following measurements:

(a) The mass of moon
(b) The distance from Dallas to Oklahoma City
(c) The speed of sound
(d) The density of air
(e) The temperature at which alcohol boils
(f) The area of the state of Delaware
(g) The volume of a flu shot or a measles vaccination

Answer 1

Appropriate SI base units or derived units for the given measurements comprise kilograms for mass, meters or kilometers for distance, meters per second for speed, kilograms per cubic meter for density, Celsius or Kelvin for temperature, and square meters or square kilometers for area. For volumes such as vaccinations, cubic centimeters or milliliters would be used.

Step-by-step explanation:

For the given measurements, appropriate SI base units or derived units would be:

• (a) The mass of moon: kilograms (kg), as mass is a base quantity and its SI unit is kilogram.
• (b) The distance from Dallas to Oklahoma City: meters (m) or kilometers (km), with the meter being the SI base unit for length and kilometers being a derived unit (1 km = 1000 m).
• (c) The speed of sound: meters per second (m/s), since speed is a derived unit represented by distance divided by time.
• (d) The density of air: kilograms per cubic meter (kg/m3), which is a derived unit involving mass and volume.
• (e) The temperature at which alcohol boils: degrees Celsius (°C) or Kelvin (K), where Kelvin is the SI base unit for temperature.
• (f) The area of the state of Delaware: square meters (m2) or square kilometers (km2), since area is calculated as length squared, a derived unit.
• (g) The volume of a flu shot or a measles vaccination: cubic centimeters (cm3) or milliliters (mL), with both being equivalent derived units for volume.

Other common examples of measurements and appropriate SI units include the length of a marathon race in meters (m), the mass of an automobile in kilograms (kg), or the volume of a swimming pool in cubic meters (m3).

Answer 2

a) the mass of the moon, the appropriated unit are grams (g).

b) the distance from Dallas to Oklahoma City, is measured in meters (m).

c) the speed of sound is measured in meter / sec ( m / s )

d) the density of air, is expressed in g / mL

e) the temperature at which alcohol boils is measured in °C ( degree Celsius)

f)The area of the state of Delaware, is measured in m²

g)the volume of a flu shot or a measles vaccination, is measured in cm³

Step-by-step explanation:

SI base unit:

• mass: g, Kg ...
• distance: cm, m, Km ...
• speed: m / s, Km / h ...
• density: g / mL, Kg / L
• temperature: °C
• area: cm², m²
• volumen: mL (cm³), m³