This is good. (Units = cm^3, I presume.)yoleven said:The Attempt at a Solution
v=20-3.5/1.7
=9.7
Careful. What's the mass of the object?then, density would be;
d=3.5/9.7
=0.36
Density is a measure of how much mass is contained in a given volume of a substance. It is important because it helps us identify and characterize different materials, and can also be used to solve problems related to objects' size, weight, and composition.
To calculate an object's density, you need to know its mass and volume. The formula for density is: density = mass / volume. The units for density are typically grams per cubic centimeter (g/cm3) or kilograms per cubic meter (kg/m3).
Density and specific gravity are related, but they are not the same thing. Density is an absolute measure of a substance's mass per unit volume, while specific gravity is a relative measure of a substance's density compared to the density of water (which is assigned a value of 1). Specific gravity has no units, as it is a ratio.
Density can be used to identify an unknown substance by comparing its density to known values of different substances. Each substance has a unique density, so if you know the density of a substance, you can determine what it is by comparing it to known values. You can also use density to determine if a substance is pure or a mixture, as mixtures will have a range of densities depending on their composition.
Density is a commonly used concept in many fields, including chemistry, physics, engineering, and geology. It can be used to determine the purity of substances, identify unknown materials, and calculate the strength and stability of structures. It is also used in industries such as oil and gas, where the density of different liquids and gases is important for extraction and processing. Density is also used in everyday life, such as determining the appropriate amount of ingredients for recipes or the proper amount of fuel for a car's gas tank.