03-08-2024 Density

Front

What is density?

Back

Density is defined as mass per unit volume. It is usually expressed in units such as kg/m³ or g/cm³.

Front

How do you calculate population density?

Back

Population density is calculated by dividing the total population by the total land area. Formula: \( \text{Population Density} = \frac{\text{Population}}{\text{Area}} \) (people per square mile or square kilometer).

Front

If a city has a population of 8792 and an area of 6.5 square miles, what is its population density?

Back

The population density is approximately 1353 people per square mile.

Front

What is the formula for density?

Back

The formula for density is: \( \text{Density} = \frac{\text{Mass}}{\text{Volume}} \) (e.g., kg/m³).

Front

What is the density of a cylinder with a mass of 0.077 kg and a volume of 1 m³?

Back

The density is 0.077 kg/m³.

Front

How do you find the density of an object?

Back

To find the density, measure the mass of the object and its volume, then use the formula: \( \text{Density} = \frac{\text{Mass}}{\text{Volume}} \).

Front

What is the population density of New Jersey in 2015?

Back

The population density of New Jersey in 2015 was approximately 1218.1 people per square mile.

Front

If a sphere has a mass of 50 g and a volume of 25 mL, what is its density?

Back

The density is \( \frac{2 g}{mL} \).

Front

What does it mean if one volume is less than another?

Back

If one volume is less than another, it means that the amount of space occupied by the first object is smaller than that of the second object.

Front

What units are commonly used for density?

Back

Common units for density include kg/m³, g/cm³, and g/mL.